DE1280977B - Circuit arrangement for pulse-controlled counting and / or dialing relay chains in telecommunications, in particular telephone systems - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN S / WWW> PATENT OFFICE

EDITORIAL

Int. CL:

HOIh

H04q

German class: 21 a3 - 22/01

Number: 1 280 977

File number: P 12 80 977.7-31 (T 31846)

Filing date: August 17, 1966

Opening day: October 24, 1968

The main patent relates to a circuit arrangement for pulse-controlled counting and / or selecting relay chains in telecommunications, especially telephone systems, in which each stage has a single anchor a multi-armature relay with inverse contact actuation and with a common for all armatures, them in their holding or rest position mechanically resetting reset magnets according to the German Patent 1109 217 contains, in which when dropping an anchor in its working position on a Control pulse made its own counter-excitation circuit ineffective and the counter-excitation circuit of the armature downstream in the relay chain is prepared, for which purpose in the counter-excitation circuits a common capacitor is switched on by the time limit of each Control pulse derived actuation pulse throwing the downstream armature into its working position prevented by the control pulse that prepares it, and in which the control pulses both the common reset magnet as well as the one occupancy of the common capacitor the other assignment via a contact actuated by the reset magnet and via the preparatory contact of the armature preceding in the relay chain with the counter-excitation coil of the armature that has just been prepared is connected, so that the armature thrown into its working position at the previous control pulse by the reset magnet returned to the rest position and the prepared armature by the actuation or charging current pulse of the capacitor released from its rest position and transferred to a medium waiting position from which he will be in his working position (fallen away) passes over.

The invention relates to a further development of the subject matter of the main patent.

In the case of the relay chain described in an exemplary embodiment (FIG. 2) in the main patent, each resumes its starting position after the end of a counting run, in which no Armature has fallen off, and by applying a potential to a particular input terminal from each Counting position can be returned to the starting position, is parallel to the counter excitation coil of the in the order of the first anchor the multiple of the working contacts of all anchor, so that each in the course of the counting process dropped armature a further counter-excitation and consequently a further drop in the first anchor in its working position prevented.

Circuit arrangement for pulse-controlled
Counting and / or dialing relay chains in telecommunications, in particular telephone systems

Addendum to the patent: 1 227 949

Applicant:
Telefunken

Patentverwertungsgesellschaft mb H.,
7900 Ulm, Elisabethenstr. 3

Named as inventor:

Alfred Chlond, 7150 Backnang

The invention is characterized in that one with its one diagonal points in the charging circuit of the capacitor switched on bridge circuit is provided, at the other diagonal points the counter excitation coil of the first armature in the order is switched on, one of which Bridge resistance from the prepared for the second or the following control pulses, there is the next counter excitation coil in the sequence and its three other bridge resistances are dimensioned so that the alignment of the bridge is brought about for the second and the following control pulses will.

In a further embodiment of the invention, one pair of bridge resistors consists of the excitation coil the reset magnet of the multi-armature relay and the capacitor that limits the duration of the control pulses with its discharge resistor and a directional conductor prevents current flow through the Coil of the first armature in the undesired direction that does not counter-excite it.

The invention is explained using circuit diagrams.

1 shows a ten-stage relay chain with a bridge arrangement which contains three ohmic resistors; at the relay chain
F i g. 2 two bridge resistors are replaced by the excitation coil of the reset magnet and by a resistor-capacitor arrangement;
Fig. 3 shows a relay diagram.

809 628/1190

In Fig. 1 shows the counter excitation coils 1 to 10 of the individual armatures of a multi-armature latching relay. As a source of control pulses, a pulse contact L is The control pulses of the excitation coil 13 are supplied to a reset magnet, which delimits at its response with its contact 131 via a control pulse length capacitor 14 causes the handover of the relay chain.

Three resistors R 1, R2, R3 are resistors of a bridge circuit, the fourth resistance of which is formed by the coil 2 to 10 that has just been prepared.

When the pulse contact i closes, the reset magnet is excited in the following circuit:

When the reset magnet is attracted, the coil 1 of the first armature is counter-excited so that the The anchor moves into its working position (dropped):

The first coil can still not take effect during the tenth control pulse because the Charging of the capacitor 14 is terminated when the tenth armature is actuated. Not until the eleventh Control pulse lets the relay chain start again with the first stage.

As long as the tenth armature is in its working position, its contact 1001 is also closed. This contact can be used, for example, in a known way to switch a higher-level relay chain on by one level.

In the case of the one shown in FIG. The embodiment of a relay chain with bridge circuit shown in FIG. 2 is used instead of the resistors R 2 and R 3 (FIG. 1), the coil 13 of the reset magnet and the pulse-limiting capacitor 15 with its discharge resistor R 5 as bridge resistors.

With this relay chain, the reset magnet is actuated by the first control pulse:

R2

And then the first anchor:

The first armature, which had dropped out during the counter-excitation of its coil 1, actuates its contact 101 and thus prepares the counter-excitation coil 2 of the second armature. The response of the second armature by the first control pulse is effectively prevented by the dimensioning of the capacitor. After the termination of the first control pulse, the reset magnet drops out, and in the pulse pause that now follows, the capacitor 14 is discharged via its discharge resistor R 4.

When the second and subsequent stages of the relay chain are actuated, the first armature remains unactuated, since the counter-excitation coil 1 is de-energized in the bridge circuit that is now becoming effective remain.

The contact 131 actuated by the reset magnet is closed before the contacts of the armature in its return movement open.

With the second control pulse, the reset magnet is actuated and, with its contact 131 , switches the counter-excitation coil 2 of the second armature prepared by the contact 101 of the first armature

101, 2, R 3

While the first armature is returned to its rest position, with its contact 101 being opened, the second armature is brought into its working position (dropped out). The contact 201 of the second armature prepares the counter-excitation coil 3 of the third armature and holds the bridge arrangement in the balanced state so that the excitation coil 1 in the shunt arm is not affected even when the third control pulse arrives.

The individual stages of the relay chain are actuated in the same way by the successive control pulses. The ninth armature is therefore returned to its rest position by the tenth control pulse and the tenth armature is moved into its working position. The contact 901 of the ninth armature disconnects the bridge circuit, but when the first armature drops, the contact 101 is closed and it prepares the coil 2 of the second armature. After the capacitor 15 has been charged and in the subsequent pulse pause - that is, when the pulse contact i is opened again - the rectifier 16 prevents a current flow through the coils 1 and 2, so that the coil 2 is not excited and also has no effect on the fall of the Reset magnet is exercised. From the second control pulse on, the bridge circuit is also effective in this embodiment, but with the difference that the balance of the bridge is only available as long as the changeover contact 131 is brought into its working position in which it prepared the discharged capacitor 15 to the respective Counter excitation coil 2 to 10 turns on. In the rest position of the contact 131 , the capacitor 15 is discharged in each case.

Claims (3)

Patent claims: 1.Circuit arrangement for pulse-controlled counting and / or dialing relay chains in telecommunications, especially telephone systems in which each stage is a single armature of a multi-armature relay with inverse contact actuation and with an anchor common to all, them in their Holding or rest position mechanically resetting reset magnets according to the German patent specification 1109 217 contains, in which when dropping an anchor in its working position on one Control pulse made its own counter-excitation circuit ineffective and the counter-excitation circuit of the armature downstream in the relay chain is prepared, for which a common capacitor in the counter-excitation circuits is switched on, the time limitation of the derived from each control pulse Actuating pulse throwing the downstream armature into its working position by the it prevents the preparatory control impulse, and in which the control impulses both the common be fed to the return magnet as well as the one assignment of the common capacitor, the other assignment of which is connected via a contact actuated by the reset magnet and via the preparatory contact of the armature preceding in the relay chain with the counter-excitation coil of the armature that has just been prepared, so that by each control pulse the The armature thrown into its working position at the previous control pulse is returned to the rest position by the reset actuating magnet and the prepared armature is released from its rest position by the actuation or charging current pulse of the capacitor and transferred to a mean waiting position, from which it is at the end of the resetting process of the previous armature passes into its working position (dropped out), according to patent 1227 949, characterized in that a bridge circuit is provided which is connected with one of its diagonal points in the charging circuit ao of the capacitor (14 or 15) ere diagonal points the counter excitation coil (1) of the first armature in the order is switched on, one bridge resistance of which consists of the counter excitation coil (2 to 10) prepared for the second or the following control pulses and the other three bridge resistances (Rl , R2, R3 in Fig. 1 and A1, 13, RS, 15 in Fig. 2) are dimensioned so that the balancing of the bridge is brought about for the second and the following control pulses. 2. Circuit arrangement according to claim 1, characterized in that one pair of bridge resistors consists of the excitation coil (13) of the reset magnet and the capacitor (15) limiting the duration of the control pulses together with its discharge resistor (RS) . 3. Circuit arrangement according to claim 2, characterized in that a directional conductor (16) is connected in series with the coil (1) of the first armature with such a polarity that a Current flow through the coil (1) in this non-counter-exciting direction is prevented. 1 sheet of drawings 809 628/1190 10.68 ® Bundesdruckerei Berlin