DE1105481B - Switching arrangement for frequency switching of several quartz oscillators using semiconductor diodes - Google Patents
Switching arrangement for frequency switching of several quartz oscillators using semiconductor diodesInfo
- Publication number
- DE1105481B DE1105481B DED33474A DED0033474A DE1105481B DE 1105481 B DE1105481 B DE 1105481B DE D33474 A DED33474 A DE D33474A DE D0033474 A DED0033474 A DE D0033474A DE 1105481 B DE1105481 B DE 1105481B
- Authority
- DE
- Germany
- Prior art keywords
- switching
- diodes
- semiconductor diodes
- quartz oscillators
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Description
Schaltanordnung zur Frequenzumschaltung mehrerer Quarzoszillatoren mittels Halbleiterdioden Zusatz zum Patent 1090 323 Im Hauptpatent wurde die Aufgabe gelöst, die Frequenzumschaltung bei quarzgesteuerten Oszillatoren mittels Halbleiterdioden vorzunehmen.Switching arrangement for frequency switching of several quartz oscillators using semiconductor diodes Addition to patent 1090 323 The main patent solves the problem of performing frequency switching in quartz-controlled oscillators using semiconductor diodes.
Die Erfindung nach dem Hauptpatent besteht darin, daß die Quarze in Pierce-Schaltung über zwei Dioden derart geschaltet werden, daß die eine Diode den betreffenden Quarz hochfrequenzmäßig an Masse schaltet, während die andere Diode der Schaltstrom7ufiihrung dient. Um die störende Diodenkapazität auf einen möglichst kleinen. Wert herabzusetzen, wird an die nicht eingeschalteten Diodenpaare eine hohe Sperrspannung angelegt. Diese Sperrspannung wird den Dioden über hochohmige Widerstände zugeführt, so daß sie beim Einschalten des Schaltstromes durch den geringen Innenwiderstand dieser Stromquelle zusammenbricht.The invention according to the main patent is that the crystals in Pierce circuit can be switched via two diodes in such a way that one diode is the The quartz in question is connected to ground in terms of high frequency, while the other diode the switching current is used. To reduce the disruptive diode capacitance as much as possible small ones. If the value is reduced, a high reverse voltage applied. This reverse voltage is applied to the diodes via high resistance Resistors supplied so that they when switching on the switching current by the low Internal resistance of this power source collapses.
Bei der Konstruktion tragbarer Funkgeräte ist bei der Auswahl der einzelnen. Konstruktionsteile auf geringes Gewicht, kleinen Raumbedarf und niederen Stromverbrauch besonders zu achten. Die vorliegende erfindungsgemäße Ausführung weist vorgenannte Forderungen, welche im Hauptpatent nicht zu verzeichnen sind, auf und kennzeichnet dadurch einen Fortschritt gegenüber dem Bekannten.When designing portable radios, one of the most important considerations is the choice of individual. Construction parts on low weight, small space requirements and low Pay particular attention to power consumption. The present embodiment of the invention has the aforementioned requirements, which are not to be found in the main patent, and thereby marks a step forward compared to the known.
Die Lösung der Aufgabe besteht darin, daß alle Dioden, die bei der Einschaltung gemeinsam zu schaltender Quarze beteiligt sind, bezüglich des Schaltstromes in Serie geschaltet sind.The solution to the problem is that all diodes used in the Switching on crystals to be switched together are involved, with regard to the switching current are connected in series.
Da der Empfänger- und der Sendeoszillator gleichzeitig umgeschaltet werden und meist räumlich nebeneinander angeordnet sind, wird bei der erfindungsgemäßen Ausführung gegenüber der Ausführung des Hauptpatentes eine Diode je Frequenzbereich eingespart. Des weiteren wird durch die Serienschaltung der Dioden eines jeden Frequenzbereiches ein zweiter Schaltstromkreis vermieden und damit der Stromverbrauch äußerst gering gehalten.Because the receiver and the transmitter oscillator switched at the same time are and are usually arranged spatially next to each other, is used in the invention Version compared to the version of the main patent, one diode per frequency range saved. Furthermore, the series connection of the diodes of each frequency range a second switching circuit is avoided and the power consumption is extremely low held.
An Hand des in der Zeichnung dargestellten Ausführungsbeispiels wird die Erfindung nachstehend näher beschrieben.On the basis of the embodiment shown in the drawing the invention is described in more detail below.
Die Senderquarze Kls, K2S, K3S werden über die Dioden Dl, D2, D3 und die Kondensatoren Cl, C2, C3 und die Empfängerquarze K1 E, K2 E, K3 E über die Dioden D7, D8, D9 und den Kondensator C4 geschaltet.The transmitter crystals Kls, K2S, K3S are switched via the diodes Dl, D2, D3 and the capacitors C1, C2, C3 and the receiver crystals K1 E, K2 E, K3 E via the diodes D7, D8, D9 and the capacitor C4.
Die Dioden D4, D5, D9 dienen einmal zur Schaltstromzuführung, und zum anderen verhindern sie Rückwirkungen der nicht eingeschalteten Quarze auf den jeweils eingeschalteten Quarz.The diodes D4, D5, D9 are used to supply switching current, and on the other hand, they prevent repercussions of the crystals that are not switched on on the quartz switched on.
In der gezeichneten Schaltstellung des Schalters S1 fließt der Schaltstrom von Minus über dieDioden Dl, D4, D7 und den Widerstand R4 nach Plus. Dadurch wird der Senderquarz K1 s über die Diode Dl und den Kondensator Cl, der Empfängerquarz KiE über die Diode D7 und den Kondensator C4 angeschaltet.In the illustrated switching position of switch S1, the switching current flows from minus via the diodes Dl, D4, D7 and the resistor R4 to plus. This will the transmitter crystal K1 s via the diode Dl and the capacitor Cl, the receiver crystal KiE switched on via the diode D7 and the capacitor C4.
Der Widerstand R4 begrenzt den Diodendurchlaßstrom und erzeugt zugleich die für die übrigen Dioden benötigte Sperrspannung; die über die Widerstände R1, R2, R3 zugeführt wird. In der gezeichneten Schalterstellung wird die Sperrspannung für die Dioden Dl, D4, D7 durch die direkte Anschaltung der Diode Dl an den Minuspol unwirksam. Dadurch ist es möglich, die Umschaltung für beide Oszillatoren sowohl mit nur einer Spannungsquelle als. auch mit nur einem einpoligen Schalter auszuführen.The resistor R4 limits the diode forward current and generates at the same time the reverse voltage required for the remaining diodes; via the resistors R1, R2, R3 is supplied. The reverse voltage is in the switch position shown for the diodes Dl, D4, D7 through the direct connection of the diode Dl to the negative pole ineffective. This makes it possible to switch for both oscillators with only one voltage source as. can also be carried out with just a single-pole switch.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED33474A DE1105481B (en) | 1960-03-11 | 1960-03-11 | Switching arrangement for frequency switching of several quartz oscillators using semiconductor diodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED33474A DE1105481B (en) | 1960-03-11 | 1960-03-11 | Switching arrangement for frequency switching of several quartz oscillators using semiconductor diodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1105481B true DE1105481B (en) | 1961-04-27 |
Family
ID=7041758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DED33474A Pending DE1105481B (en) | 1960-03-11 | 1960-03-11 | Switching arrangement for frequency switching of several quartz oscillators using semiconductor diodes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1105481B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3243726A (en) * | 1962-07-27 | 1966-03-29 | Siemens Ag Albis | Crystal oscillator having plural, selectable feedback paths and adjustable frequencydetuning means |
| DE3033699A1 (en) * | 1980-09-08 | 1982-03-25 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Home entertainment centre with common LF stage - has semiconductor switches coupling each source to latter when DC supply is switched on |
-
1960
- 1960-03-11 DE DED33474A patent/DE1105481B/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3243726A (en) * | 1962-07-27 | 1966-03-29 | Siemens Ag Albis | Crystal oscillator having plural, selectable feedback paths and adjustable frequencydetuning means |
| DE3033699A1 (en) * | 1980-09-08 | 1982-03-25 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Home entertainment centre with common LF stage - has semiconductor switches coupling each source to latter when DC supply is switched on |
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