DE1004675B - Electronic search dialer - Google Patents

Description

GERMAN

In telecommunications, especially in telephone systems recurring task, from a plurality of facilities, both for the steps required for further connection establishment as well as central facilities such as registers or markers, it may be possible to select one that is still available, is so far almost exclusively solved by mechanical search dial. Since the operating speed of such search dialers as a result the masses to be moved and the power to be applied are relatively narrow limits are set, different paths have now been taken, the mechanical voters through to replace devices that work without inertia.

In pursuit of this goal, the voter was already through a cathode ray tube with a Variety of output electrodes mimicked, the rotating arm of the original selector through the cathode ray is replaced. However, apart from the great effort required for the operation of the tube and the control of the electron beam are essential, especially the high internal resistance of such an electronic selector, which is also due to its use secondary emission electrodes cannot be reduced to the desired extent. This high internal resistance means that it is possible at night with an electronic voter this type of electromechanical components, such as. Relays, to excite, used in conjunction with electronic Voters as parts of facilities that have been in use for a relatively long time, such as registers, certainly apply can find.

So the task was to create a voter with as little effort as possible and the lowest possible power consumption much faster than a voter with mechanically moved Sharing works and at the same time is able to deliver. This task is carried out by solved the circuit arrangement according to the invention.

The electronic search dial described below is used to designate a free of several identical or different facilities triggered by an incentive Dialing process. All institutions connected to the voter transmit this to the voter to their current occupancy in the form of potentials, the free state by a positive potential of a certain minimum size, the occupied state, on the other hand, due to the absence of this Potential or falling below the specified minimum size is designated. From the number of One-electronic search selector transmitting free potential to the voter

Addendum to patent 956 593

Applicant: Siemens & Halske Aktiengesellschaft,

Berlin and Munich, Munich 2, Wittelsbacherplatz 4

Dipl.-Ing. Hansjoachim Jabczynski, Munich-Solln, Dipl.-Ing. Friedrich Licht, Dr.-Ing. Werner Krägeloh, Munich, and Dipl.-Ing. Rolf Hiller, Starnberg,

have been named as inventors

He chooses the first directions after receiving the incentive and designates what by submitting it of a potential to the device in question or switching of a relay contact can.

The fulfillment of the above-mentioned task of the electronic search selector is made possible according to the main patent application S 42169 VIII a / 21 a ³ by a circuit arrangement with the following characteristic features. All devices are assigned switching steps equipped with discharge tubes, to which the devices transmit their current occupancy status as free or a potential deviating therefrom, whereby, upon the incentive, by means of a potential test of the discharge tubes provided for designating a device at the same time for all switching steps, a single one without the Position of the switching stage in the selector-dependent delay is ignited that each switching stage provided with free potential prevents the labeling process by a control circuit arranged between the individual switching stages for each switching step that follows in the labeling sequence, also provided with free potential, so that only the first in the labeling sequence with Free potential provided device is referred to. In accordance with this basic function, the electronic search selector essentially replaces a mechanical rotary selector, the

609 840/175

on an incentive in free choice starts, by a test process on the first with free potential provided lamella, which the test arm reaches, is stopped and a second one Arm turns on an occupancy potential to the device belonging to this lamella.

Apart from that, a fundamental difference can be seen in the course of the entire dialing process from the fact that the electronic search dialer makes the dialing process completely without mechanical movement Performs parts and therefore works much faster. A mechanical rotary selector is due to its construction always forced to test one device after the other; the

fende and a gas discharge tube equipped with a control electrode that characterizes this device contains, the cathodes of the elements evaluating the current flow by means of control lines equipped, testing gas discharge tubes via coupling capacitors with the control electrodes of the each belonging to the same device, characteristic gas discharge tubes are connected. The control electrodes of the gas discharge tubes being tested are over on free or one that deviates from it Potential information lines individually with the associated facilities and these individually with in the main circuit of the respective associated, be

free run of the selector thus includes a temporal 15 graphical gas discharge tubes lying switching

Sequence of individual test processes, in each of which a single facility is checked for its occupancy is checked. The voter is stopped and the test run terminated

elements connected that the current flowing when burning the gas discharge tube in question evaluate. To maintain a progressive load from a certain zero point

A control circuit is present on the first, that is, the earliest in terms of time, 20 submission order

seen in the case of every S expensive line, with the exception of the one that defines the zero point, about accordingly polarized rectifiers to the anode-side resistors of all in the order in front of it,

lamella provided with free potential. In contrast, in the case of the electronic search dialer discussed here, all checks are carried out on the
Connected facilities
their occupancy status takes place at the same time. Of the 25 gas discharge tubes to be tested while devices are simultaneously determined to be free, a fixed bias voltage is connected to this test process and then the first one, the control line in question being designated by this through the actual dialing process. Rectifiers in their transmission capability are, however, included here under "first device". This ensures that, in response to the already mentioned contrast to 30, a mechanical rotary selector that checks all gas discharge tubes does not trigger all of the control electrode-related processes, such as e.g. B. turning of side with free potential provided gas discharge selector arms, reached first, but ignite those tubes at the same time, whereupon only the test gas sequence of the devices closest to the zero point determined by the circuit arrangement to understand the 35 discharge tube via their Control line the characteristic gas discharge tube arrangement that is associated with a marked point in this circuit is closest in terms of circuitry.
The temporal "succession" of the mechanical
Rotary selector is in the invention
Electronic search dials with it by an electrical circuit arrangement are to be replaced in the sequential "one behind the other". the description on the basis of the figures and through

The mentioned excellent point of the scarf- an application example will be explained. in the arrangement is shown below with the individual zero point

designated. This zero point defines by its position Fig. 1 and 5 exemplary embodiments of the electronic

the order of names of the facilities 45 see search dial with a fixed zero point, fixed and thus corresponds to a circuit modification in the group in the mechanical Fig. 2

Rotary selector about the zero position of the rotary arms. If the zero point is within the Circuit arrangement always remains unchanged, this leads to the fact that the zero point is always at The nearest free facility is chosen, especially in times of low traffic or at In itself little used facilities to a different occupancy frequency of the

ignites because the transmission of the other control lines is blocked by the rectifier. Structure and mode of operation of the invention

the characteristic gas discharge tubes,

3 shows a circuit modification in the group of testing gas discharge tubes,

4 and 6 exemplary embodiments of the electronic search selector with advancing zero point,

7, 8 and 9 circuit modifications in the selector stages of the electronic search selector according to FIG. 5

institutions affiliated to the electorate. Same 55 ^{tin <} i 6,

Occupancy frequency for all facilities can be shown in Fig. 10 a circuit modification in the for

can be achieved in that the zero point is not a control circuit serving to advance the zero point

occupies a fixed position within the electorate, and

but by certain switching measures with Fig. 11 an application example of the electronic

each attempt to occupy one step ahead of 6o see search dial.

The search dial shown in Fig. 1 is provided for the connection of four devices and accordingly has four levels, each one of which corresponds to the current occupancy

the 'additional patent application relates, can be designed for both fixed and with every attempt to occupy gas discharge tube T 1 and a zero point advancing the device and contains indicative gas discharge tube Γ 2, which test for an incentive. Each has the following characteristic features: Each of the gas discharge tubes to be tested is assigned its own switching stage via a device, its own anode resistance R 1 on the positive one test its current occupancy status- 70 Pole + Ub of the common operating voltage

advances, because in this way the order of the facilities connected to the voter is ongoing is changed cyclically.

The search dial according to the invention, on which

switched source, in the supply of which the working starter of the tube Tzc is transmitted and ignites contact j ι is inserted; also lies in this. The positive voltage jump occurring at their cathode resistance cathode line of each tube Ti a cathode R 5c is resistance R 2. The potentials transmitted by the devices individually via the selector output terminal c ' to the potentials transmitted to them for their occupancy 5 connected device bestatus are characteristic, these are characterized by these. The via the series resistor R 8 c the selector inputs α to d , to which the bias voltage supplied to the starter + i / z / 2, to the starter of the tubes Ti via series resistors R 3 to which the transmitted on the control line are connected. Added by the cathode resistance pulse, allowed, with relatively smaller levels R 2, the control lines / over the 10 pulse amplitude lead to reliable ignition to the series resistors R4 to the starters of the designated; the series resistor R 8 c holds the nenden gas discharge tubes T 2, which are also equipped with loading of this pulse by the internal cathode resistors R 5. Each was the voltage source Uv 2 small. The selector output terminal a! Which is arranged in front of the tube T2 on the cathode side is connected to a starter of the tubes Ti c and Tzc. up to d ' , the series resistors R 3 c and R 4 c prevent the decrease in the designation of the selected effects when the tubes are ignited, in which the voltage used in the direction is used. The common starter-cathode path, which is extraordinarily small, the same operating voltage of the tubes T2 is obtained behind the "internal resistance". The resistance Rgc removed from the normally open contact J1. Each control has the task at certain desired Beleitung for about rectifier RIi to the 20 drawings voltage at the cathode resistance R $ c anodes of all, in the order before and optionally the anode current of the tube T2 c connected uninterruptedly be tested tubes Ti; To keep so within permissible limits is z. B. the control line Ic via the equal In the same way, as just described, connect

Richter Rt 1 ca at the anode resistor Ria also hold the other stages of the selector tube Tτα and via the rectifier Rl 1 cb at ^a 5 in the assumed operating case that only a one-anode resistor R 1 b of the tube T ib The voter free potential is also averaged to each control line, with the exception. The Verder first, la, are placed over the resistor R 6 with a ratio of the first with the tubes Ti »positive bias voltage + Uv 1 , the approximately and T 2 α equipped selector stage, since at their equal the voltage at the anode a burning control line la no rectifier Rl 1 is angeden tube T 1. Through the capacitors C 1 are closed. For this reason also eliminates and C 2 are the bias voltages + U v τ of in this control line to the cathodes of the tubes Ti and the starters from the series resistors J? 6 supplied front tubes T2 kept at the other stages and thus remain voltage + Uv first The capacitor Cia is used with no influence on the ignition conditions of this 35 of the first stage to the starter bias tubes. + Uv 2 of the tube T2 α from the cathode resistance

The above illustration of the principle R2α of the Tia tube should be avoided. The structure now allows the operation of the As the next operational case, let us assume that

Voters on the basis of various, typical operational- the first and the second that accrue to the voter to explain. 40 closed facilities are free, so the

First .sei assumed that only a single input terminals α and b and thus the starters of the devices connected to the selector of the tubes T ι α and T ib free potential is transmitted free, for example, which is transmitted to the third voter. At the closing stage that represents the incentive. Correspondingly, only the contact si will ignite so that these two free potential are transmitted to the input terminal c , 45 tubes, so that a potential of a certain minimum size at their cathode resistances. This creates a positive voltage jump in each case. The minimum value is equal to the starter voltage, which is required by the method resistance R 2 α behind the capacitor for ignition due to the voltage jump at Kaeine tube T1 when the operating voltage is switched on. Ignition of the tube T ic, Ci α resulting impulse is unaffected on the transmitted via the series resistor R 3 c to the free 50 control line la , adds to the potential provided terminal c is connected via the resistor R 8 α However, the starter supplied is not yet possible because, like all the other bias voltage + Uv 2 and ignites the tube T 2 α, tubes Ti, through the open contact si the anode side still disconnects from the operating voltage via its cathode resistance R 5 a - the Ausgarigsklemme a ' that is used to denote the separated. Only after receiving an incentive that creates potential for the first institution. At the same selector according to Fig. 1 of the time is to close the con- with the generation of the ignition of the clock si, ignites in the assumed loading tube T2a pulse required the tube has pushed the event RöhreT1 c, which at its Ka Tia now the object to prevent the ignition of the method resistor R2C a positive voltage tube T2 &. This happens with a jump that arises behind the capacitor Ci c 60 with the help of the anode resistor Ria of the tube as a positive impulse on the control during ignition, which is held at a positive bias via the resistor Tia, through which the anode potential of this tube R 6 c is lowered. Line Ic thus appears. A derivation of this Im- at the cathode of the rectifier Rl 1 ba, i.e. on pulses via the closed rectifier Rl 1 ca and Rl 1 cb connected to this control line connected to the anode of the tube Tia , can 65 pole of this rectifier, a potential, that does not take place, because they are equal to the counter voltages on them at the anode of the rectifier Rl 1 ba, which ignited tubes Tia and T1 b equal to the B of this rectifier when the pole is not connected to the control line Ib lying, through which the propulsion voltage + Ub are, remain blocked. So that voltage source Uv 1 is a certain potential. the impulse is almost unattenuated at the 70 By the behind the capacitor C1 b

standing positive pulse, which is added to the bias voltage + Uv-i , the anode voltage of the rectifier now exceeds the cathode counter-voltage applied to it, whereby the rectifier becomes very low-resistance and the control line is loaded by a shunt resistance, which results from the low rectifier on-state resistance and the parallel connection from the resistance Ria and the

draws; corresponds to it, taking into account the fundamental differences already shown between mechanical rotary selector and electronic selector, the first following the zero position Slat of a mechanical rotary selector. In place of the zero position of the rotary selector the zero point occurs in the electronic search selector, which is therefore before the first selector level is to be thought. From him there will always be the

almost vanishing "internal resistance" calculated in the order of names.
Tube Tτα in series with their Kathodenwider- In -Fig. FIG. 2 is a circuit modification in FIG

was composed of R 2 α . The amplitude of the displayed on the group of designating tubes Γ 2, the control line Ib occurring positive import In contrast to the circuit of FIG. Ι is here · pulses thus undergoes a voltage division, the label of the selected device is not the resistance ratio of the series resistor * 5 by applying a to the mentioned shunt resistor R 5 RTb to the mentioned shunt resistance (Fig. i) of the ignited tube T 2 removed, so that the voltage across the capacitor C 2 b , but by switching a transmitted residual pulse together with the talking contact carried out. For this purpose, the resistor R8b supplied starter is in the main circuit of each voltage + Uv 2 is no longer sufficient, the tube 20 drawing tube T2, in the illustrated Ausfüh- T2b zn , so that actually only a'einzige approximately example on the anode side, a relay M which has been selected at the device. Igniting the tube assigned to it Γ 2 is excited

As a further operational case, it is assumed that and the designation contact is made around the second and fourth of the to the voter. In Fig. 2 this contact is, as are already free to connected facilities. After receiving 7.5 the device connected to the voter to the right of the incentive thus ignite the tubes Ti b nen, not shown.

and Tid, which, as explained above, is behind the Will the incentive by closing a

Capacitors C1 b and Ci d given positive pulses ent- relay contact (contact s 1 in Fig. 1), so stand. Of these two pulses, however, only that of the control line Ib is transmitted because of the relatively long closing time, since the relay contacts at 30 run the risk of duplicating this control line. connected rectifier assignments. To the incentive towards zünden'nämlich Rl ι ba cathode side to the undiminished loading all other starter provided with free potential operating voltage Ub + Hegt and therefore locked tubes T1 and thereby generate at their Kableibt, whereby the tube T2b is ignited. The method resistances positive voltage jumps, to the control line Id reaching pulse 35 At the same time, each of these tubes has the task of, because the rectifier connected to them, the transmission of those positive pulses that

arise behind the capacitors C1 of the stages behind it in the order to block. If now, within the closing time of the incentive contact, one is assigned in the sequence before the one already assigned by triggering it

Rl ι db is on the cathode side at the significantly lower anode voltage of the burning tube T ι b , lowered in its amplitude so far that the tube T2 d cannot ignite.

Finally, the case should be dealt with in which all facilities connected to the voter transmit this free potential. When the contact J1 closes, all tubes T i ignite. A pulse transmission without lowering the amplitude is only possible on the control line la , since its transmission capacity cannot be influenced. In contrast, one occurs on all other control lines

If the device is exposed to the device selected in the tube T 2, its tube T1 subsequently ignites and transmits a positive pulse to its tube T 2. This cannot be reduced in its amplitude, since no other tube T1 is burning in front of this tube T1. This ignites a second tube T 2 in the group of characteristic tubes Γ2 and thus designates a second

Reduction of the pulse amplitude, since the 50 facility, which means that there is a double occupancy

these connected rectifiers Rl 1 are on the cathode side at the low anode potential of burning tubes Ti. This ignites only the tube Για and denotes the device connected to it.

In summary, the mode of operation of the selector can now be represented in such a way that the transmission capability of a control line is only unaffected when the tubes T 1

is. This can be remedied in that an already ignited tube T 2 prevents the firing of a further tube T 2. This can be achieved in the simplest way by providing the tubes T 2 with a cathode resistor common to all of these tubes, which prevents further tubes in this group from igniting due to the voltage drop occurring on it when one tube is burning. In execution

all in the order preceding 60 example according to FIG. 2, this resistance is considered to be

Selector stages are not ignited, represented by the common cathode resistance R 10.

Connection of the rectifier Rl 1 is determined. Taking into account the inductances of the in

which selector stages are used as »in the order before- this embodiment example relay M

forthcoming «are to be considered. In the case of the display, instead of the common cathode

development according to Fig. 1 are, as from the rectifier 65 resistor R 10, a correspondingly high

arrangement can be seen, accordingly the left drawn from a considered voter level further electoral levels as "previous". This is also the furthest voter level marked on the left as the »first«

sene inductance be provided.

With reference to FIG. 3, which shows the group of the testing tubes T1 for itself, a further measure to prevent double assignments is explained. It starts from the fact that

the risk of double assignments due to testing tubes T ι still igniting after the start of the selector function sequence can be reduced by shortening the time in which these tubes are ignitable. Since the relay contacts are to unsuitable due to their long response time, the introductory the functional sequence incentive in the circuit arrangement of FIG. 3 is no longer displayed by turning on the operating voltage + Ub via a contact to the tubes T i, whereby they are capable of ignition, but, as detailed below, by means of a brief capacitor discharge. The operating voltage + Ub is continuously fed to all tubes T 1 via their anode resistors R 1. Also in transmission of free potential at the input terminals α and d may be any of the tubes T ι igniting as in the drawn, the idle state of the selector position corresponding to the incentive contact si the resultant to a selector input terminal when turning on a free potential voltage jump due to a front of the starter of the relevant Tube T1 lying coincidence circuit behind the associated capacitor C 4 cannot generate a pulse sufficient for ignition. Said coincidence circuit comprises the resistor R 12 and the rectifier R 12, which is connected to the bias voltage Uv 3 on the cathode side via line r and the resistor R 13 common to all coincidence circuits. Since the latter is chosen to be much smaller than the free potential, the rectifier R 12 is permeable, whereby the supplied free potential divides the voltage according to the resistors R 12 and i? 13 learns, which does not allow the pulse that occurs behind the capacitor C4 to rise to the minimum amplitude required for ignition when the free potential is switched on.

The resistance value of R 12 is expediently chosen to be significantly greater than that of Ä13. During this operating state determined by the position of the contact si , the capacitor C 5 is charged positively with respect to ground via this contact and the resistor R 14 by the connected voltage source Uv4, the voltage of which is selected to be greater than the free potential. If the contact J 2 is now thrown and thus the function sequence of the selector is initiated, the capacitor charged to the voltage + Uv 4 is connected to the cathodes of the rectifiers Rl 2 via this contact and blocks them. Since the aforementioned voltage dividers are thus electrically separated, the free potentials fed to the selector input terminals α to d now also reach their full value behind the resistors R 12, as a result of which positive pulses arise behind the respective capacitors C 4, which, via the series resistors R 3, the starters of the Tubes T 1 supplied, the latter ignite. The resistors R 11 have the task of keeping a load on these positive pulses due to the generally low internal resistance of the bias voltage source Uv 5 low. This bias source serves the same purpose as the bias source Uv2 described in connection with FIG. Since the capacitor C 5 discharges to the much lower voltage Uv 3 via the resistor Ä13 after the contact s 2 has been switched over, which is the stimulus, the aforementioned electrical separation of the voltage dividers in front of the starters, consisting of the resistors R 12 and R 13, occurs only as long as the voltage across the capacitor C 5 exceeds the free potentials supplied to the selector. By suitable choice of the discharge time constant determined by the size of C 5 and R 13, the time during which the tubes T 1 are ignitable by electrically isolating the voltage dividers can be limited to the value required to reliably ignite these tubes. The task of the resistor R 14 is to limit the charging current surge of the capacitor C 5 to a tolerable level when the contact s2 falls back.
As already explained in detail in the explanation of the basic functional sequence, the ignition of a testing tube T1 has two consequences; On the one hand, a voltage jump is generated on the cathode side, from which the pulse required to ignite the associated indicative tube T 2 can be derived; on the other hand, the voltage drop across the anode resistor causes the suppression of these pulses at all stages following in the sequence. That the two processes mentioned take place at the same time.

Find zs , as it is a condition for a correct function of the voter, has the prerequisite that all the testing tubes T 1 ignite at the same time. This requirement is not always met to the required extent by the usual gas discharge tubes with a cold cathode, which are preferably provided for the voter; The time required to build up the gas discharge is often subject to considerable variations from tube to tube and can also show significant changes over time due to aging and comparable phenomena.

Significant deviations from an average build-up time of the gas discharge can now lead to that a tube that ignites very quickly has already sent an impulse to it via its control line assigned indicative tube transmitted before the gas discharge in a preceding in the order the test tube is constructed with an exceptionally long ionization time in terms of strength,

♦ 5 that the voltage drop occurring at the anode resistance of this tube due to the increasing tube current is sufficient to suppress the pulse of the tube that ignites first. Since the first pulse that reaches the group of indicative tubes T 2 is therefore not blocked, and the following, as it is transmitted through the control line of a previous stage, cannot be blocked due to the circuit arrangement, two indicative tubes T 2 are ignited , which leads to an incorrect double assignment. Even if this double occupancy is provided by a resistor provided in the common operating voltage supply of the tubes T 2 , such as, for. B. resistor R 10 in Fig. 2, is prevented, the error remains that the order of the designations in this case is not determined by the circuit arrangement in the desired way, but by the properties of the tube. A device with a particularly rapidly igniting testing tube Ti would therefore always be preferred. This error can be countered by delaying the transmission of the pulse from the testing tube to the marking tube by an amount of time that ensures reliable ignition

'/ "' of all those with free potential on the starter side

609 840/175

11 12

Tubes T ι allows. Since an amount of time can be influenced approximately the same speed. By which the ionization serve sufficiently, this comparison is from the anodes of the tubes T test ι wegzögerung on the duration of the operation of the leading contact with the chains behind the single selector no appreciable effect. According to NEN contacts to the control lines / leading Fig. 3, this delay is through parallel-connected rectifiers RIi. The connection of these contacts of a capacitor C 6 to the cathode resistor chain is chosen so that the individual, the level R 2 of each testing tube Ti reaches. Steps assigned contacts in the direction of the Be-This capacitor causes a flattening of the drawing sequence one behind the other. By leading edge of the übertrage- on the control line, these contacts is for each individual planes pulse and thus achieved that io defined in conjunc- legungsversuch, which tubes T ι when dung with the i via series resistor? 8 (Fig. I) Toggle igniting the Pulse transmission on a specific bias voltage that suppresses the starter's control line. In this way, the voltage supplied to the tube T 2 later reaches the amplitude required for the contacts, that is, to define the ignition zero point, while within the selector from which the 15 designation sequence used to control the rectifier Rl ι is counted. Anode voltages of the tubes T1 without delay To explain how the sound works. As a result, the rectifier Rl ι connected to the anode arrangement according to FIG. 4 is assumed to be already suitable in advance that, as shown in the figure, the fr contacts are tensioned before the one connected to them is opened and the a-, c- and ^ -contacts closed control lines pulses can occur, which are 20 and that on the functional sequence a faulty pulse transmission due to late conductive stimulus, the tubes Για, Tib and lowering the rectifier reverse voltage have ignited T1 d. The one behind the condenser that will. Cia from when igniting the tube T 1 a

Which of the indicated measures against the cathode resistance R are 2 α occurring clamping double assignment expedient application 25 voltage jump resulting positive pulse is substantially determined by design and function behind the resistor R 7 a, ie on the Steuerder to the selector cooperating formwork line La , suppressed, since it determines the direction when it occurs. It is noted that rectifier Rl 1, and Rl 1 ad, the kathodendie in Figures 2 and 3 gezeigtenSchaltungsabwandlun- other of the Kontakteai, d2 and C2 or to the gene in order to prevent double assignment is not 3 α 3 ° contact the low anode potential the burn only in connection with the nenden tubes T1 b or T τ d shown in Fig. 1 as a counter-voltage embodiment, but also in all have, become permeable, whereby the voltage use already described in the embodiments described below in connection with FIG. 1 can find. division occurs. Thus, the to this control Fig. 4 shows an electronic search selector with 35 line la connected, indicative tube Γ 2 a with each attempt to occupy advancing zero - do not ignite. Behind dot finds other relationships. Based on the resistor Ry b on the basis of FIG. 1, that is to say on the selector explained in the control, this is also provided for four devices that are determined when the tube T1 b is ignited and has a standing pulse. A derivation via the corresponding four stages, of which in Fig. 4 4 ° rectifier Rl 1 ba can not take place, since only the group of testing tubes T 1 and these on the one hand through the open contact b 1 of control lines with their associated .Steuerschal - the anode of the device, which is at low potential, can be shown. While with the voter with burning tube Tia is separated and another fixed zero point (Fig. 1) the zero point and 'on the other hand via the contacts ei and di zn to the rectifiers Rl 1 ca and 45 their polarity blocking because of with the order of names device is set, whereby each voter stage Rl 1 leads there. In the same way, the one of the other stages deviating from the sound rectifier Rl 1 bd remains ineffective, since it receives the getung, can with the selector with advancing · open contact b 3 and via the closed the zero point each stage the first in the Series contact c 3 to the blocking rectifier Rl 1 cd follow; consequently all stages 50 are leads. Since the rectifier RIi bc is also the same as one another in terms of circuitry. The zero point due to the open contact b 2 has no influence and thus the sequence of names is determined on the transmission capability of the control line Ib, which in this case can be exercised by its own with Kon ignites the control circuit operating on this control line that is switched on descriptive tube T-zb. With each attempt to occupy one step further, the control line Id switches. If during a seizure attempt the other hand, shows that this is the associated upon ignition of the zudurch this control circuit fixed designation tube T 1 d voltage sequence downstream of the condenser, for example, ABCD, then Cid resulting positive pulse does not übersie the next bcda; after two further amounts, since the rectifier Rl ι db on the laying attempts in which the designation ^5o 'closed contacts ei 2 and C2 apply to the lower order cdab and dabc , the anode potential of the burning tube Tib is the original order again achieved. A lies. The two other rectifiers Rl ι da and comparison of these four possibilities shows that each Rl ι de remain ineffective in this case, since the level of the selector within a cycle introduces every first-mentioned to the open contact b 1 position in the designation sequence once and the other via contact "^ by which, when looking at a certain stage anode of the non-ignited tube T ic , other stages than" previous "and full operating voltage + Ub are blocked," following "apply. Accordingly, must generally order thus ignites in the group of bezeichnenjede control line I of each of the tubes preceding T2 exclusively that shown in Fig. 4 not tested tube Ti in its Übertragungsfähig- tube 70 and T2b denotes the her to-

13 14

orderly facility. In the same way, would bind its own contact, a selbdie tube T 2 b and then ignite when currency-incentive to the permanent Next counting the Relaiszählkette out in the group of tubes T test ι rend the excitation of the 5 "relay by abwechselnsämtliche tubes were ignited, as can be understood with reference to the, mutual energizing and de-energizing of the F above explanation without further ado. 5 and prevents the T-relay. the Anzugsverzöge-According to check out the with the tubes Tib and tion of -F relay is selected in such a way that the next selector stage equipped with T2b represents the first in the circuitry of the relay counting chain and thus the sequence of signs; Voter has ended.
If you speak to the voter with a fixed zero point according to io Fig. 5 shows another embodiment Fig. ι its with the tubes Ti α and T20 be a search selector with a fixed zero point. Structure of a piece with which it has in common the non-influenceability and function of the characteristic tubes T1 and their control line. While the control lines ι α to 1 d correspond to the arrangement described in selector with fixed zero point, this property connection with Fig. 1, is achieved by the circuit arrangement, is 15 deviating from this, the rectifier arrangement, it with the selector with advancing zero point by means of which the transmission capability the control according to FIG. 4 can be influenced by opening the control lines, the arrangement of which leads to contacts & 1, & 2 and 63 belonging to the line, which also require a circuit change in the group, expediently to a separate set of contacts, of the descriptive tubes Γ2. While being measured, won. Since all stages are equal to each other in the circuit arrangement according to FIG. 1, by opening their control line (with the exception of the first) the equal contacts influencing their clocks while closing all other transmission capacity at the same time can switch each stage to the first in The designation judges are connected in parallel to the anodes which are made in sequence, whereby at the same time the test tubes preceding the sequence lead the position of every other stage in the designation 25, form these rectifiers in the arrangement sequence advances cyclically. 5 a series circuit between

The typical control scheme of the contacts, the control lines (with the exception of the first), namely that the contacts of a contact set to the anodes of the open via further rectifiers when the tubes testing the previous contact set (with the exception of the last) are closed, makes it advantageous appear that are individually 30 switched. This results in the construction of contact sets as contact sets of relays from which to influence the transmission capability and to combine the individual relays into a rectifier serving as the control lines, the known relay counting chain, in the scheme shown in FIG only relay is energized and at supply control line /, with the exception of the first, la, and tion of an incremental pulse of the current-carrying 35 of the last, Id, via a rectifier Rl 3 to the state of the relay just energized on the anode of the previous testing tube T1 next passes. In the search selector with advancing and via a rectifier Rl 5 to the control the zero point, the zero point line of the following testing tube T 1 is determined by the current-carrying relay, while the one in the designation is a separate relay for each selector stage Sequence of the last control line Id is seen over "one. Since the advance of the zero point in the rectifier Rl?, c should only take place at the anode of the previous each assignment attempt, the outgoing testing tube Ti c is connected. Continuation of the relay counting chain useful in the function of this arrangement how the change in the group of designated contacts J2 (Fig. 3) brought about by the time dependency on actuation of the incentive. game are explained.

It is assumed that after receiving a built-on relay counter chain Z with its individual stimuli the tubes Ti & and Tid have ignited, selector stages associated with step relays A to D in which at their cathode resistors R 2 positive simpler than Block is shown because 5 ° tive voltage jumps occur, from which the capacitors C 1 pulses are generated by their circuit details for the selector function, are of no importance. The start relay S is excited by the pulse closing the contact w , which occurs on the control line Ib , when the selector arrives because the rectifier Rl 3 α is to function on the cathode side, and gives it via its full operating voltage + Ub and the contact j 2 (Fig. 3) the required stimulus 55 rectifier Rl 5 b in the reverse direction claimed impulse which is located in front of the testing tubes T1, amplitude unaffected by the coincidence circuits. At the same time it excites the bias voltage + Uv 2 via the resistors R 8 b by closing its normally open contact s 3 and and i? 4 & biased starter of the tube T2b. via break contact 1 1 the progression switching relay F, which In contrast undergoes attracts by the firing with a certain delay, and both 60 of the tube Tid behind the condenser C ι d aufmittels Contact / 1, the Relaiszählkette continued on passing pulse amplitude decrease, as the and by means of Contact / 2, the isolating relay T ER suggests that control line connected rectifier which binds by means of contact 1 2 and by Rl 5 c via the rectifier R 3 b to the anode contact 1 1 the progression switching relay F yields. The ignition of the tube T1 b leads, whereby the isolation relay T in turn coincides with deenergization of the 65 pulse this control line, the already explained starter relay S by opening the contact J3. Voltage division occurs. The purpose of this control of the T-relay is in this arrangement, the line to the anode of the previous checking by rapidly de-energizing the -F-relay leading to the tube Tic rectifier Rl 3c, progression of the relay counting chain is necessary because of the full pulse acting as a counter voltage in time to limit. The fact that it is 70 operating voltage + Ub blocked and influenced in the

15 16

Assumed operating case the transmission capability - a sufficiently large impulse occurs at the starter, the control line Id is not capable. as is the case when the contending voter

With this arrangement, too, only the first stage in the order of calculation is a single control line that transmits an impulse that is virtually un- and therefore the transmission property of its weakened to the group of characteristic tubes. 5 S. control line is not influenced, then ignites an ignition of the designating tube, in the previous this designating tube as the only one in its lying case, i.e. the tube T2 b, may group, as with the other tubes, this group in contrast to according to the circuit arrangements. either the anode voltage increase is not shown - Fig. ι and 4 not yet take place. occurs because the associated testing tube does not

The reason for this condition is has ignited therein to ^lo, or the reaching to the starter Imsehen that by the pulse with the same polarity in series is not required for ignition Ampliliegenden rectifier R S b and R 5 c reaches the control tude as the testing tube of a previous lines Ib, Ic and Id are coupled, this outgoing stage forming a shunt to the related coupling according to the polarity of the same control line.

judge Rl 5 b and Rl 5 c is directional. Without ¹ S A further consequence of the coupling of the control additional measure, this coupling would lead to lines via the rectifiers Rl 5 c and Rl 5 b M multiple assignments, as can be seen from the fact that in the absence of the rectifier Rl4, their assumed operating case, consequently only the Expediency is set out below , the test tube Txd ignited in response to a stimulus load that has behind the capacitors C1 can be shown. The pulse occurring on the control ² ° is greater, the further the line Id occurring pulse first reaches the relevant stage from the zero point. As the starter of the tube T2 d; but also it reaches load for example, during ignition of the starter occurring via the rectifier R 5c and RLSB to the tube Ti b on the control line Ib of the featured tubes T 2 c and T 2 b, pulse act mainly the resistors since the rectifier Rl3c, Rl ^ b and Rl $ a because of * s R6b and RSb, since the rectifiers Rl ^ a and the non-ignited tubes Tic, Tτb and T τα Rl5b are blocked. On the other hand, the ignition is blocked and therefore no amplitude-lowering of the tube T 1 d occurs on the control line Id on the shunt. When the ignition passing pulse off ohnei further action by the reaching amplitude of all on the control line Id parallel resistors R6, pulse occurring and same Zündbedingun- 30 all resistors R 8 and lie close parallel for all designating tubes would thus the series circuits of the resistors Ry with in a faulty way the tubes T2b and the resistors R2 are also loaded, since only T2c ignite for them. Since, in general, for each of the rectifiers R13a to Rt?> C blocked, the end tube, with the exception of the first and the rectifier Rl 5c and Rl S b, however, permeable last, there is the possibility that they are ignited. ■ decisive influence on the whole is without having its associated test tube load resistance while the opponent Burns, are required at these stages of the selector special stands R 7, whose resistance value is so small particular measures. as possible, since they are in the tax

One possibility of preventing such faulty ignition leads from being inserted during the resistance series is to make the resistances R 6 and i 8 forming the tubes 4 ° value of the operating voltage + Ub ' supplied to the control lines T2b and T2c as large as to choose so small that an ignition of this is made possible, with which their contribution to the roar also with. Occurrence of the total load resistance of the control remains small. To lines Ib and te their starters supplied Im- now mainly the influence of the series circuits pulse does not occur, while the tubes T 2 α and ⁴⁵ from the resistors R 7 and R 2 to that of T2d at the starter-side ignition off stage Level increasing load of the control-reaching operating voltage + Ub lie. In order to switch off the lines, the ignition of the tubes is in the control line. T2b and Γ2c when burning gen (with the exception of the first) the rectifier of the associated tubes Γι b and T ic z, u inserted, which are for borrowed on the control lines, each of these with the selector stages 5 <> contains impulses that are permeable , however, the one coincidence circuit. This coincidence circuit containing the resistors R6 and Ry ensures that a significant of the control lines are decoupled. Tube can only ignite if, on the one hand, the deviation from the other selector stages

burns its associated test tube 'and can switch the first and the last are constructed the other hand, the transmission capacity of its control 55, since the Steuerlaitung- la no rectifier supplies line not by previous stages affect and is leading to the control line Id Gleichflußt. In the circuit arrangement according to the judge Rl 5 b and Rl5 c for this control Fig. 5 this coincidence circuit z. B. in lines occurring pulses always blocking the second selector stage by acting between the two stages, neither the Koin-cathode of the tube T ib and the anode of the tube ⁶ ° cidential circuit nor decoupling rectifier in. The T2b lying »capacitor Cy b in Control line connection required.

shown with the anode resistance R 9 b . In Fig. 6 shows an expansion of the selector with

Ignition: the capacitor generates a fixed zero point according to FIG. 5 to a selector Cyb from the zero point at the cathode resistor 7? 2 b corresponding to the advancing zero point in the tube T 1 b. In order to obtain this self-standing voltage jump a positive one at the ⁶ S shaft, the impulse occurring in all the control anode resistance J? O £> of the lines, with the exception of the first, connecting the operational rectifier circuit supplied via this resistor according to FIG. 5 to a ring voltage + Ub ' to a, value, which expands to the circuit, which is sufficient by between the starter-side ignition of the tube T 2 b. Contacts αϊ inserted into selector stages until di can be disconnected at the same time as this voltage increase 70. Since in this operating mode

each stage can occupy any position in the order of names, all stages are equal to one another with coincidence circuits. and decoupling rectifiers RI4. in the control lines, as explained in connection with FIG. 5, equipped. For the same reason, the testing tubes T 2 of all stages; the operating voltage + Ub ' supplied, which enables these tubes to be ignited on the starter side only when positive pulses, supplied via the capacitors C 7, occur at the anode resistors Rg. The determination of the zero point, from which the sequence of names is counted, is done by opening one of the contacts α ι to d i inserted into the mentioned rectifier ring circuit, the contacts on the just opened; Contact following selector stage (in Fig. 6 to the right of the open contact αϊ, so the stage with the tubes T ι α and T2a) is the first in the order of the designation. The contacts can be controlled by a relay counting chain, as already described in connection with FIG. 4, with each relay having only one normally open contact in the arrangement according to FIG. 4, with which for η selector stages ttr " ^{1 make} contacts per relay are required.

Should the tubes T 2 are supplied to pulses charged through the resistors Rg too strong on the capacitors Cy, so 6 are shown in FIG. A switch between the lines leading to the capacitor Cy feeders and the resistors R 9 rectifier rig with a polarity such that the Impulses cannot flow through the resistors R g. These rectifiers are then permeable to the tube current flowing when the tubes T 2 are ignited. This consideration naturally also applies to the circuit according to FIG. 5.

In FIG. 7, a single selector stage of a selector with advancing zero point is shown, in which a coincidence circuit which differs from the arrangement according to FIG. 6 is used. Here, too, the indicative tube T 2 is initially supplied with an operating voltage which; prevents this tube from igniting on the starter side. For this purpose, the anode of the tube Γ 2 to a tap of the plane parallel to the operating voltage source Ub is the voltage divider consisting of the resistors i? 15, R16 and Riy placed, the operating voltage source Ub itself emitting a voltage sufficient for the starter-side ignition connected tubes. Since the rectifier Rl 6 is permeable to the voltage across the resistor R 16, and the transformer Tr 1 has a voltage divider resistor R 16 that disappears compared to the parallel voltage divider resistor R 16. Has DC resistance, it is practically short-circuited; As a result, the operating voltage supplied to the tube T 2 is almost exclusively determined by the resistors R 15 and Riy and kept at a value that is not sufficient for the starter-side ignition. When the test tube T 1 is ignited, a positive voltage jump occurs at the cathode resistor R2. On the one hand, this generates a pulse downstream of the capacitor C1 which, if no previous test tube is burning, is transmitted on the control line I to the starter of the tube Γ2; on the other hand, the rectifier R16 via the transformer Tr 1 blocks and lifts. thus the short circuit of the resistor R 16 on. If the voltage divider resistors are suitably selected, the operating voltage supplied to the tube T 2 thus reaches a value which enables ignition on the starter side, so that the tube Tz ignites when a pulse of sufficient amplitude is simultaneously present on the starter. In order to achieve the required to prevent double assignment delay of the ignition of the featured tubes, which was achieved in the circuit of Fig. 3 with each selector stage through the capacitor C 6 and explained in connection with this figure, in parallel with the voltage divider resistors. R 16 and Riy the capacitor C 8, which causes an immediate increase in the amount supplied to the tube T 2. Operating voltage when igniting the tube T ι and the associated blocking of the rectifier Rl 6 prevented. The transformer Tr can optionally be designed to transform upwards, since its secondary voltage is only used to block the rectifier R16. The above is advantageously used! described coincidence circuit when, because of the low permissible current of the tube T 1, the pulse transmitted on the control line would be too heavily loaded by a parallel coincidence circuit according to FIG. In order to keep the quiescent current flowing through the voltage divider available for each stage as small as possible, the operating voltage + Ub is expediently not switched on permanently to the selector, but supplied via a separate contact operated at the same time as the stimulus contact s2 (Fig. 3) . The arrangement consisting of the voltage divider lying parallel to the operating voltage source, the transformer inserted into the cathode line and the rectifier located between the voltage divider and the transformer can also be provided between the cathode of the tube T ι and the control line, unlike the circuit arrangement shown in FIG will. The output voltage of the voltage divider that occurs when the rectifier Rl 6 is permeable, i.e. the tube Ti is not ignited, replaces the control line bias voltage + Uv 1 supplied via the resistor Ro in the arrangement according to FIG 6, according to which the anode of this tube is connected on the one hand via resistor i? 9 to the operating voltage + Ub 'which is not sufficient for ignition on the starter side, and on the other hand via capacitor C 7 to the cathode of the associated testing tube T 1.

8 shows a selector stage in which, in contrast to the arrangements described above, the coincidence does not take place between anode and starter voltage, but only on the starter side, the operating voltage + Ub supplied to the indicative tubes T 2 allowing these tubes to be ignited on the starter side . Therefore, in order to avoid double assignments, the. The starter of the characteristic tube supplied impulse alone does not reach the amplitude required for ignition, even if the transmission capability of this control line is not influenced. A pulse of this amplitude only occurs at the "starter" if it is simultaneous with that of the

609 840/175

19 20

Control line I transmitted pulse via resistance addition. FIG g one of the preceding stand i? 'I8 and rectifiers R y, a second import the arrangements of different embodiments which is pulse-fed to the starter, whereby the rectifier circuit through which the Übertrabeidie on separate' Due to the supplied impulses to the ability of the control lines to be able to act, add the resistance i? 8 in the steps preceding the common load resistance. Since the ampli is influenced, while in all of the previously audited differences between that which has been purged in the absence of! Arrangements the anodes of the checking coincidence and which, in the case of coincidence at the starter tubes, were galvanically coupled to the control pulse via rectifier, then capacitive is sufficient if the two are connected on separate paths by means of the capacitors Cg application starter The pulses supplied are the same as one another. Due to the amplitude across the resistors R 20, the bias voltage carried into the coincidence will be + Uv 5: the resistance inserted by the line 2? 18 appropriately so control lines Z to lead these capacitors ^ dimensioned that the pulse voltage losses on the rectifier Rl 3 on the cathode side pre-control and coincidence lines are about the same size that they are also when a pulse occurs. The task of the also in the coincidence lock on your control line. An unlocking line rectifier RIy is, one of these rectifiers only takes place when mutual influence of the two separate bias voltages + Uv 1 and + Uv 2 caused by the ignition of the test tube is prevented. behind the capacitor C 9 resulting negative Notwithstanding this arrangement can also be sawn 20 Pulse 3 ■ Jiegende the rectifier Rl, prior Sonders if + Uv ι greater than + Uv 2, the firing only by the bias voltage Uv 5 geWiderstand R 18 is lowered via an additional capacitor given counter-voltage. A separate sator can be connected to the cathode of the tube T1 instead of to the bias voltage of the control lines, as in the case of the capacitor C 1. In this earlier-described arrangements by the span trap, the rectifier RIy is omitted, since the voltage sources Uv 1 are already given, it is unnecessary; in this additional capacitor in the coincidence line trap.

a load on the high-resistance resistor. Fig. 10 shows a control device which

stood R 8 supplied bias voltage + Uv 2 prevented by interacting with the voters with in front of the cathode resistor R 2 . relays required for each step as the zero point returns

9 shows a part of a selector with the advancing zero point for the determination of the zero point, at the stages of which by a coincidence circuit of this zero point with each attempt to occupy this zero point, the amplitude of the switching of the stage relays is also effected. This control device connected to the starters of the designated tubes T 2 can basically influence the control device shown in the long pulses and the designated lower part of FIG + Ub is supplied. set, preferably in conjunction with is applied in contrast to the pre-learning of FIG. 6 to 9 currency-In this arrangement, ie with voters, described in the control line / each the handoff of the zero point only a selector stage, a resistor R 19 inserted, behind a single contact per voter level. You entdem a rectifier Rl 8 to the cathode; the check-40 keeps the tube T 1 of the same stage as well as the definition and switching. Resistance of the zero point required means also a and rectifier together form a span part of the stimulus circuit and voltage divider shown in in the case of a permeable rectifier, an amplitude position of the zero point between successive reductions corresponding to the high resistance is the occupancy attempts'. Since this rotary selector value of R 19 and the rectifier pass-through resistor only requires a single contact arm, the stand occurs. If the control line of one of these points is advantageously a so-called voter-selector stage, whose testing tube is not ignited relay, which essentially has a relay, from another, in the following order, 50 with attached and actuated contact the stage via the between Then there is an expensive cable disc and a rectifier that is often used for marking purposes finds a positive voltage. The mode of operation of the control jump is transmitted, as the rectifying device is described in the following: rectifier Rl 8 via the resistor R 2 cathode. In the idle state, the capacitor C 5, which is like

side is at ground potential and therefore permeable 55 the resistors R 13 and R 14 and the voltage, a voltage division whose amplitude on sources Uv 3 and Uv 4 does not correspond to the identically designated ones for the ignition of the elements of FIG. 3 for this control line Contacts belonging to the characteristic tube T 2 have sufficient resistance R 14 and the contacts a 4 to (/ 4 lowers to value. When the tube T r burns, on the other hand, the voltage of the voltage source Uv4 positive blocks the cathode voltage charged to its control 60 Functional sequence of the selector line connected rectifier Rl 8, whereby the initial switching of the contact w is separated from the voltage connection occurring on this control line and jumped through the voltage, if it was not caused by the burning of a in + Uv 4 via normally closed contact mi and the selector Sequence of designations for the preceding test relay, MW of one of the step relays A to D energized, ends tube T 1 in its amplitude is lowered 65, which is reduced by opening its normally closed contact in the search, only a slight decrease in amplitude selects the zero point from which. from the designation of the resistors R 19 and R8, whereby the sequence is counted. For the R8 has a very high resistance, it is experienced and therefore amplified. The position of the zero point is therefore decisive, on a daily basis it is suitable to ignite the characteristic tube: Γ 2 which lamella the contact arm of the selector relay. 70 just stands.

21 22

For example, if it is on the second lamella, the rungseinriichtting does not contain a relay with which the cam switch connected to this lamella could interact. Relay B energized and by opening the contact b ι The above description of structure and

(Fig. 6) The selector stage 5, which belongs to this contact and is equipped with the mode of operation of the electronic search tube Γι & and T2b , now equips it to briefly go into its field of application first in the designation sequence, whereby a certain application is also used when energizing the step relay B play with reference to FIG. shall be explained ii, the changeover contact b 4 folded over and the Arbeite- First, the Suchwähter can at all points

contact b 5 closed. By moving the to be used, at which it is necessary, from the contact 64 becomes the on the voltage ^{10 of} a plurality of devices, the both + Uv 4 charged capacitor C 5 to the lines, connection sets, selection stages, etc., processing r, which leads to the coincidence circuits lying in front of the starters of the checking, ie the connections themselves, as well as the tubing T ι, connection establishment and connection monitoring (FIG. 3), switched and thus causes the incentive. serving, central facilities, such as registers, through suitable adjustment of the contacts b 1 and '5 markers, converters, zoners, etc., one, and i> 4 is achieved that the determination of the first of the marked by free potential-zero point in Voters have to be selected before the function- ned facilities and the incentive to initiate the process in the voter happens. to draw. This designation can then close the contact 65 at-Duroh, for example, the designated device is excited to further working magnet M of the selector relay, whose ² ° switching operations, such as switching to the pick-up delay, is selected so that the search is closed serving line, further connection of a selector of the testing and labeling process from register, can be initiated. Likewise, it is also closed before the working magnet attracts. possible that the search voters among a plurality When tightening of the working magnet M is of devices which m him her current Bedessen contact 1 of the contact arm of the voter ² 5 communicate legungszustand, selected, however, a berelais separated from the voltage + UV4 and DA agreed among a large number of other devices when the cone was switched on at the same time. This operating case can then occur with little timing on the one leading to the stage relay C if a group of the same slat does not excite it. Via the holding contact devices with a second group, likewise m 2, the working magnet binds, whereby a 3 ° equal to each other, but from the first switching of the selector relay in the interplay of different devices comes into connection. On with the step relay is prevented. This holding of a concrete example to the interaction circuit is only upon return of the changeover of the search selector with other institutions Contact w to its rest position act again separated, are presented.

At the same time, via resistor R 14, the controller is recharged to the voltage + Uv 4 as an example of the application of the search capacitor C. By means of the contact arm devices now standing on the lamella leading to the step tray in connection with the relay C connected to it. The task of the entire arrangement of the selector relay is now that for the next loading, an input to a position of the zero point that is valid from this side is held in the coming incentive a free facility to search selector. share, including a search selector and for each input

Another possibility is to assign a control unit to a connection set. In the figure, the direction of establishing and relaying of the inputs 1, 2, etc., which Anreizein zero point in search selectors of FIG. 6 to 9 up gears 1 ', 2', etc., the devices with E, assemble, is given by the use of a cam +5 search selector with W and sets the connection switch, depending W ^r ählerstufe a cam with V denotes. Over the connection multiple ν disk with an interrupter contact has where and the test multiple p is each search selector and the cams are offset from each other so that each connection set with each device opens only one contact. This breaker connection. Since nutr realize the basic effective contacts which are to be shown in Fig. 6 with ai to dl 5 °, Fig. 11 is restricted to the essential parts of the overall circuit for establishing the zero point. serving contacts; the cam switch in its each of the devices E transmits their

The entirety replaces selector relays and step relays current occupancy status permanently to that of the arrangement according to Fig. 10. The relaying of the test manifold p, on whose individual lines that of the cam switch occurs via a simultaneous starter of the ρ calling tubes to the respective timely with the switching of the stimulus contact Er devices belonging to the selector stages in the energized working magnet to which the camshaft with selector W are switched on. If now one of each suit turns so far, until the next con-incentive inputs, z. B. the input i ', an incentive clock has opened, and its pick-up delay is supplied, so ignite in this incentive is chosen so that in the search selector the test and 60 gang connected search selector, here in the designation process is ended until the next Voters Wi who test the tubes Ti opens the voter contact. If the cam switching stage is equipped, the inputs of which receive via the test multiple p ter with −1 simultaneously actuated breaker free potential, whereupon in the selector stage, contacts per cam disc, whereby the number of selector stages first in the designation sequence and thus the Cam disks belong to the free device E , which indicates that this cam switch can also ignite in tube T2. If, for example, the search link with the search selector Wi shown in FIG. 4, as indicated in FIG. II, is used as a selector selector. Own Haltestram- executed with a fixed zero point and besides white circles to prevent an automatic further teren the device Ea free, so ignites in the search switching are not necessary, since this Sfceue- 7 ° selector the significant tube T 2α, whereby on

Claims (30)

their cathode resistance R 5 α a positive voltage occurs. In the application example shown, this voltage is used to control the connection set V 1 and. thus used to connect the input 1 to the selected device Ea . The connection set shown in Fig. 11 consists in the simplest form of a rectifier control circuit, each channel to be switched through a resistor R and a; Rectifier Rl includes and whose star point is fed to the positive bias voltage + Uv via the series resistor Rv. Each rectifier Rl leads to the cathode of the characteristic tube of that selector stage to whose associated device E it controls the connection. In the idle state of the selector, all rectifiers R1 are transparent, since they are not supplied with a blocking counter voltage on the ^{cathode side 1.} On the other hand, when a significant tube is ignited, the rectifier leading to the cathode of this tube is blocked because. with a suitable choice of the bias voltage + Uv, the cathode voltage of the burning tube exceeds this. In the assumed operating case, the rectifier Ria is blocked by the voltage drop occurring at its cathode resistor R 5 α when the tube T 2 a burns, while the others. Rectifiers remain permeable. A signal fed to input 1 is thus only transmitted via resistor Ra to the connection manifold , ν and via this to device Ea , while the transmission of the signal fed to the input for connection is often prevented on the other connection paths in the connection set by their permeable rectifier Rl. A decoupling of the connection paths in the connection set is achieved by the resistors R , while the capacitors C prevent the voltages used for rectifier control from escaping at the input and connection manifold. When working with the connection set described above, the ignited, indicative tube T2 is only deleted when the connection is disconnected, while the testing tubes can be extinguished immediately after their task has been completed, i.e. immediately after the ignition of the beizeichnendfen tube. The selected facility switches off its free potential immediately after it has been occupied, so that no double occupancy can occur in the event of further attempts to occupy other voters. With circuit tasks of the type mentioned Both voters with a fixed zero point as well as with an advancing zero point with every assignment attempt The type of voter that ultimately applies is case-by-case to decide according to the special conditions under which the respective search selector works. In the description above, search dials with four dial levels were always dealt with and shown in the figures; it should be noted, however, that the principle applied is not Restriction of the number of electoral levels conditional. Likewise, the type of voting in the electoral grades is limited gas discharge tubes used not only apply to the cold cathode tubes with starting electrodes symbolically shown in the figures; Rather, any type of gas discharge tube that is equipped with its own ignition electrodes, Find use. To delete the ignited tubes in the function tab, u-f of the search dial can use all types of extinguishing circuits, such as interrupter contacts, so-called "lock-out" resistors in connection with their own extinguishing tubes, in the common operating voltage supply Inserted transformers for coupling in erase pulses, etc., can be used. ■ PATENT CLAIMS: ι. Electronic search selector for designating a device identified by a marking potential from a plurality of similar or different devices in response to an incentive in accordance with the main patent application S 42169 VIII / 2ia ³ , characterized in that each device has a current occupancy status (Ti) and this device Identifying (T 2) gas discharge tubes equipped with a control electrode are assigned, with the cathodes of the elements (R 2, Tn) provided with the current flow evaluating elements (R 2, Tn) being used to test the gas discharge tubes via coupling capacitors (Ci, C 2) with the control electrodes each of the identifying gas discharge tubes (T 2) belonging to the same device are connected, so that the control electrodes of the gas discharge tubes (T 1) are individually connected to the associated devices and via information lines (a to if) which are on marking or a potential deviating therefrom this via designation ngslinien (a ' to · d') are individually connected to the main circuit of the respective associated, characteristic gas discharge tubes (T 2) located switching elements (RS, M) , which evaluate the current flowing when the gas discharge tube in question is burning, so that one of Each control line (/), with the exception of the one closest to the zero point, via appropriately polarized rectifiers (Rl τ, Rl3) to the anode-side resistors (Ri) of all the test gas discharge tubes (Γ '" ¹ · 1) is switched with simultaneous supply of a fixed bias voltage (- \ - Uvi, - \ - Uv5), whereby the relevant control line (I) is influenced in its transmission capacity by this rectifier (RIi, Rl 3), whereby all testing Gas discharge tubes (Ti) supplied stimulus to ignite all the control electrode side provided with free potential gas discharge tubes (Ti) at the same time , whereupon only the gas discharge tube to be tested which is closest to the zero point! (Ti) via its control line (/) ignites the characteristic gas discharge tube (T 2) assigned to it, ~ as the transmission capability of the other control lines (/) through the rectifier (J? / 1, i? / 3) is blocked. 2. Suchwähfer according to claim 1 for compliance a designation sequence progressing from a fixed zero point, thereby characterized in that each control line (/), with the exception of the one closest to the zero point, over one rectifier (J? / 1) each directly to the _ anodes of all in the order in front of it lying, testing gas discharge tubes, (T i) is switched. 3. Search selector according to Claim.i to maintain a designation sequence which progresses from a zero point and which advances with each designation process, characterized in that the anode of each gas discharge tube (Ti) being tested has a series connection of contacts (01 to 03 ...) connected to it. di to α ⁷ 3) and via a rectifier (RIi) of corresponding polarity to the control lines (/) of all other gas discharge tubes (T 1) being tested, in such a way that each rectifier (RIi) is behind a contact (αϊ to d $) leads to a control line (/), the contacts in front of the rectifiers (Rl 1) connected to a respective control line (/) are combined to form a contact set and only the contacts of one set are open to determine the zero point, its position with advances cyclically with each labeling process. 4. Search selector according to claim 1 to comply with a designation sequence progressing from a fixed zero point, characterized in that each S expensive line (/), with the exception of the one closest to the zero point and the one furthest away from it, via a rectifier (Rl 3) to the anode of the preceding, testing gas discharge tube (Ti) and via a rectifier (RIs) to the control line (/) of the following, testing gas discharge tube (T 2), while the control line furthest from the zero point is connected via a rectifier (^ 3) is only at the anode of the preceding gas discharge tube (Ti) to be tested, and that between the cathodes of all gas discharge tubes (Ti) to be tested, with the exception of the one closest to the zero point with its control line (/) and the one furthest away from it, and the this through the respective control lines. (/) associated, indicative gas discharge tubes +5 (T 2) each have a coincidence circuit inserted. 5. Search selector according to claim 4, characterized in that in each control line (I), with the exception of the one closest to the zero point: and 5 "of the farthest from this, between the cathode of the associated, testing gas discharge tube (T 1) and the for A rectifier (RI4) is inserted into the anode of the preceding, testing gas discharge tube (T 2) leading coupling point. 6. Search selector according to claim 1 to comply with a description sequence progressing from a zero point, which advances with each labeling process, characterized in that the anode of each gas discharge tube testing (Ti) with the interposition of a rectifier (Rl 3) via a contact (α-1 to dl) is connected to the control line (/) of the following sequence, ^ff 5 testing gas discharge tube (T 1), and these contacts (a to d) are connected to. The rectifiers connected to the expensive lines (Rl 5) are combined to form a ring circuit, with only one contact (a to d) being opened to determine the zero point, the position of which advances cyclically with each marking process, and that between the cathodes of all the gas discharge tubes ( T ι) and these assigned by the respective control lines (/), descriptive. Gas discharge tubes (T2) each have a coincidence circuit inserted. 7. Suohwähler according to claim 6, characterized in that in each control line (I) between the cathode of the associated, testing gas discharge tube (Ti) and the coupling point leading to the anode of the preceding testing gas discharge tube (Ti), a rectifier (Rl 4) is inserted. 8. search selector according to one of claims 4 to 7, characterized in that the coincidence circuit consists of a behind the to the anode of the preceding, testing gas discharge tube (Ti) leading coupling point in the Steuierleituing inserted resistor (R 19) and a rectifier (Rl 8) exists, which leads to the cathode of the respective control line (I) belonging to the testing gas discharge tube (Ti) and is polarized in such a way that it is blocked by the cathode voltage of the testing tube (T 1). 9. search selector according to one of claims 4 to 7, characterized in that the anodes of the anode side via a resistor (Rg) to operating voltage (+ Ub ') connected * indicative gas discharge tubes (T 2) via capacitors (C 7) to the cathodes of the are connected to them by the respective control lines (I) associated, testing gas discharge tubes (Ti), and that the so designed, characteristic gas discharge tubes (T 2) is supplied with a reduced operating voltage (+ Ub '). 10. search selector according to one of claims 4 to 7, characterized in that the coincidence circuit from a parallel to the control line (/) lying rectifier (Rl 7), which is polarized such that it is unlocked by the cathode voltage of the gas discharge tube (Ti) to be tested , and a resistor (R 18) lying in series with this is formed, which is selected so that the transmission attenuation of the series circuit of rectifier (Rl7) and resistor (R 18) lying parallel to the control line is approximately the same as that of the control line. 11. Search selector according to one of claims 3 and 6 to 10, characterized in that the contacts (αϊ to 0.3 ... di to 0 * 3, ai to dl) belong to relays (A to D) which belong to a counting chain ( Z) are summarized. 12. Search selector according to claim 11, characterized in that the relaying of the relay counting chain (Z) by the relay (5 ") emitting the incentive is effected with a time delay selected in such a way that it only takes place after the dialing process has been completed and by its own holding circuit Automatic switching is prevented by the interaction between the relay counting chain (Z) and its control circuit ( S, F ₁ T) . 13. Search selector according to one of claims 3 and 6 to 10, characterized in that the 609 MO / 175 Contacts (αϊ to a ^ ... Di to d ^, αϊ to di) belong to relays (A to D) that are connected to the outputs of a marker selector (MW) , so that when the activation occurs approximately at the same time as the stimulus a voltage to the marker selector (MW) only the relay (A to D) just marked by the selector (MW) is energized and that each relay (A to D) has a contact (0-5 to α "5). Working magnet (M) of the marker selector (MW) energized, which is delayed in pick-up in such a way that it only disconnects the voltage supply to the contact arm of the marker selector (MW) after the end of the dialing process, the selector arm moves one step further and is binds by means of a holding contact (ni2) to prevent automatic wait switching. 14. Search selector according to one of the preceding claims, characterized in that the gas discharge tube (Γι) evaluating elements which test the current flow are each resistors (R 2) . 15. Search selector according to one of claims 1 to 13, characterized in that the gas discharge tubes testing the current flow. (Ti) evaluating elements are transformers (TYi), the secondary windings of which are switched off via rectifiers (R16) to voltage dividers (R 15, Rio, R17) connected to a bias voltage, the control lines (I) each from the rectifier (R 16) lead away the leading points of the voltage divider. 16. Search selector according to, one of claims 4 to 7, characterized in that the current flow-checking gas discharge tubes (Ti) of evaluative elements each transformers (Tn) are whose secondary windings via rectifier voltage divider lying against the operating voltage (R 6) (R 15, R16, R17) are connected, and the anodes of the respectively associated characteristic gas discharge tubes (T 2) to the points of the voltage dividers (2? 15, i? 16, R17) leading to the rectifiers (Rl 6 ) and the control lines (/ ) are connected to the cathodes of the gas discharge tubes (Ti) to be tested. 17. Search selector according to claim 8 undl 9, characterized in that the current flow evaluating elements of those testing gas discharge tubes (T 1), which with their control line (I) are closest to the zero point and farthest from this, each resistors (R 2 ) and the elements evaluating the current flow of the remaining gas discharge tubes (Γ1) are each transformer (Tn) whose secondary windings are connected to voltage dividers (R 15, R16, R17) via rectifiers (Rl 6), with the control lines (/) lead away from the voltage divider points leading to the rectifiers (R16). 18. Search selector according to one of the preceding claims, characterized in that the control lines (/) are connected via series resistors (R6) to a voltage source (+ Uv 1) , the voltage of which is approximately the anode potential of burning, testing gas discharge tubes! (Ti) is the same. jo 19. Search selector according to one of claims 1 to 17, characterized in that between the anodes of the gas discharge tubes (T 1) and the rectifier (Rl 3) leading to the control lines (Γ ) capacitors (C 9) are inserted, and to the Connection points of these capacitors (C 9) with them. Rectifiers (i? / 3) a voltage source (Uv S) is connected via series resistors (R 20), the voltage of which is approximately equal to the cathode potential of burning, testing gas discharge tubes (Ti). 20. Search selector according to one of the preceding claims, characterized in that the control lines for the response delay of the characteristic gas discharge tubes (T 2) (/) or the cathodes of the gas discharge tubes (T 1) being tested are capacitively (C 6) loaded. 21. Search selector according to claim 16, characterized in that for the response delay of the indicative gas discharge tubes (T 2) to the parts (R 16 and i? I7) of the voltage divider (i? 15, R16, R17) between the to the anodes of the Characteristic gas discharge tubes (T 2) leading points and the points leading to the negative pole of the operating voltage source are, capacitors (C 8) are connected in parallel. 22. Search selector according to one of the preceding claims, characterized in that to prevent the ignition of more than one indicative gas discharge tube (T 2) these have a common cathode resistor (Rio) . 23. Search selector according to one of the preceding claims, characterized in that the switching elements which evaluate the currents flowing in indicative gas discharge tubes are resistors (R 5) and / or relays (M) . 24. Search selector according to one of the preceding claims, characterized in that a contact (si) is connected in the common operating voltage supply of the gas discharge tubes (T 1) to be tested, the closing of which represents the incentive which initiates the search selection. 25. Search selector according to one of claims 1 to 23, characterized in that a capacitor (C5) is provided, which by the voltage source (Uv 4) via a. Changeover contact (s2) is positively charged, and when the changeover contact (s2) is turned over, it emits a positive impulse which represents the stimulus and which blocks rectifiers (Rl 2) arranged in front of the control electrodes of the gas discharge tubes (Ti) that divert the marking potentials. 26. Search selector according to claim 13 when using an incentive circuit according to claim 25, in which the voltage used to advance the marker selector (MW) simultaneously serves to positively charge the capacitor (C 5), characterized in that this voltage (+ Uv4) is switched off by the stimulus circuit and switched on to the marker selector control circuit and each of the relays (A to D) connected to the marker selector (MW) combine to output an impulse representing the stimulus clock (α 5 to rf 5), the changeover contacts (α5 to ds) of all relays (A to D) are connected in parallel. 27. Search selector according to one of claims 1 to 23, characterized in that in the ge * · Common operating voltage supply for the gas discharge tubes (Ti) being tested, a transformer is switched on, via which an impulse representing the incentive is coupled in can. 28. Search selector according to one of the claims 3, 6 to 10, 14 to 23 when using an incentive circuit according to claim 25 or 27, characterized in that the contacts are actuated by control cams and these control cams are arranged offset from one another on a common shaft in such a way that with each switching on, only the contacts (cn to »3 ... di to 6? 3, αϊ to di) of a single contact set are open, and that the camshaft is switched on by a. Ar- Beitsmagneten happens, which is excited about the same time as the stimulus and so delayed is that dais closing the contacts just opened and opening the next Contacts after the end of the dialing process happens. 29. Search selector according to one of the preceding claims, characterized in that a contact is inserted into the common operating voltage supply of the checking (Ti) and / or bezeicbnieoden (T 2) gas discharge tubes, and when it is opened, burning gas discharge tubes are extinguished. 30. Search selector according to one of claims 1 to 28, characterized in that a transformer is inserted into the common operating voltage supply of the testing (Ti) and / or indicative (T2) gas discharge tubes, via which a pulse that causes the extinguishing of ignited tubes can be coupled . For this purpose 2 sheets of drawings O 609 840/175 3.57