AT79433B - Circuit arrangement for telephone systems in which the incoming and outgoing lines are each assigned a loudspeaker device. - Google Patents
Circuit arrangement for telephone systems in which the incoming and outgoing lines are each assigned a loudspeaker device.Info
- Publication number
- AT79433B AT79433B AT79433DA AT79433B AT 79433 B AT79433 B AT 79433B AT 79433D A AT79433D A AT 79433DA AT 79433 B AT79433 B AT 79433B
- Authority
- AT
- Austria
- Prior art keywords
- incoming
- circuit arrangement
- assigned
- telephone systems
- loudspeaker device
- Prior art date
Links
- 238000004804 winding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Landscapes
- Telephone Function (AREA)
Description
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verbunden. Durch OSnung der Kontakte ubg ist das der abgehenden Leitungäälitü, zugo Vibrationsrelais Rb abgeschaltet, so dass das Umschalterelais U a in Ruhe bleibt.
Sobald der Spreobstrom vom Teilnehmer B ausgeht, entsprechen die Vorgänge den geschilderten mit dem Unterschied, dass die Relais R b und U a in Wirkung gelangen und die Durchschaltung über die Leitungen da erfolgt. Beim Wechsel der sprechenden Teilnehmer wird zunächst beim Aufhören des Sprechstromes an sämtlichen Schaltvorrichtungen der Ruhezustand hergestellt und darauf durch den von der anderen Seite kommenden Sprechstrom die entgegengesetzte Durchschaltung bewirkt.
Während bei dem dargestellten Beispiel die beiden Verstärker zur Ausübung der ver- mehrten Wirkung in Reihe geschaltet werden, kann die Einrichtung auch so getroffen sein, dass sie unter entsprechender Wahrung der Richtung der Verstärkungswirkung beide parallel liegen. Auch kann man die Empfängerwicklungen der Verstärker in Reihe und ihre Sender- wicklungen parallel schalten oder umgekehrt. Die Umschalterelais können auch durch den ver- stärkten oder unverstärkten ankommenden Sprechstrom unmittelbar beeinflusst oder aber durch besondere Ströme, die beispielsweise durch Tastendruck an einer der Teilnehmerstellen her- gestellt werden, in Tätigkeit gesetzt werden.
PATENT-ANSPRÜCHE :
1. Schaltungsanordnung für Fernsprechanlagen, bei denen der ankommenden und der abgehenden Leitung je eine Lautverstärkereinrichtung zugeordnet ist, gekennzeichnet durch vorzugsweise selbsttätig wirksame Umschaltvorrichtungen, die die Verstärkereinrichtungen beider Leitungszweige in der durch den jeweils sprechenden Teilnehmer bestimmten Richtung zu gemeinsamer Wirkung bringen.
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connected. By opening the contacts ubg, that of the outgoing line, plus the vibration relay Rb, is switched off so that the changeover relay U a remains at rest.
As soon as the Spreobstrom emanates from subscriber B, the processes correspond to those described with the difference that the relays R b and U a come into effect and the connection takes place via the lines da. When the speaking subscriber changes, the idle state is first established on all switching devices when the speech flow ceases, and the opposite connection is then effected by the speech flow coming from the other side.
While in the example shown the two amplifiers are connected in series to exert the increased effect, the device can also be designed so that they are both parallel while maintaining the direction of the amplifying effect. The receiver windings of the amplifiers can also be connected in series and their transmitter windings in parallel or vice versa. The changeover relays can also be directly influenced by the amplified or unamplified incoming speech current, or they can be activated by special currents that are produced, for example, by pressing a button at one of the subscriber stations.
PATENT CLAIMS:
1. Circuit arrangement for telephone systems, in which the incoming and outgoing line are each assigned a sound amplifier device, characterized by preferably automatically effective switching devices that bring the amplifier devices of both line branches in the direction determined by the respective speaking subscriber to common effect.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE79433X | 1915-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT79433B true AT79433B (en) | 1919-12-10 |
Family
ID=5638644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT79433D AT79433B (en) | 1915-08-27 | 1916-08-26 | Circuit arrangement for telephone systems in which the incoming and outgoing lines are each assigned a loudspeaker device. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT79433B (en) |
-
1916
- 1916-08-26 AT AT79433D patent/AT79433B/en active
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