SU788432A1 - Device for connecting four-wire communication channels into ground connection - Google Patents
Device for connecting four-wire communication channels into ground connection Download PDFInfo
- Publication number
- SU788432A1 SU788432A1 SU792726533A SU2726533A SU788432A1 SU 788432 A1 SU788432 A1 SU 788432A1 SU 792726533 A SU792726533 A SU 792726533A SU 2726533 A SU2726533 A SU 2726533A SU 788432 A1 SU788432 A1 SU 788432A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- communication channels
- wire communication
- matching
- transformers
- receiving
- Prior art date
Links
Description
II
Изобретение относитс к св зи и может использоватьс , в частности, дл группового соединени четырехпроводных каналов громкоговор щей св зи.The invention relates to communications and can be used, in particular, for a group connection of four-wire channels of a hands-free communication.
Известно устройство включени четырехпроводных каналов св зи в групповое сЪеди«ение , содержащее блоки разв зки цепей приема и передачи каждого канала, а также приемные и передающие согласующие усилители 1.A device for switching on four-wire communication channels into a group connection is known, which includes intercom blocks for the reception and transmission circuits of each channel, as well as the receiving and transmitting matching amplifiers 1.
Однако известное устройство вносит сравнительно большое затухание.However, the known device introduces a relatively large attenuation.
Цель изобретени - уменьщение вносимого затухани .The purpose of the invention is to reduce the insertion loss.
Дл достижени этой цели в известном устройстве блоки разв зки выполнены в виде замкнутой многозвенной цепи, состо щей из трансформаторов по ч слу каналов, первична обмотка каждого из которых соединена с соответствующим приемным согласующим усилителем, а вторичные обмотки трансформаторов соединены последовательно и выполнены со средними точками, кажда из которых соединена с одним выводом соответствующего передающего согласующего усилител , другой вывод которого соединен с замкнутой многозвенной цепью вTo achieve this goal, in the known device, the isolation blocks are made in the form of a closed multi-link circuit consisting of transformers in the case of channels, the primary winding of each of which is connected to the corresponding receiving matching amplifier, and the secondary windings of transformers are connected in series and made with middle points, each of which is connected to one output of the corresponding transmitting matching amplifier, the other output of which is connected to a closed multi-link circuit in
точке, затухание до которой от данного блока разв зки в обе стороны замкнутой многозвенной цепи одинаково.a point where the attenuation to which a closed multi-link chain is to the both sides of a given decoupling unit is the same.
На чертеже приведена структурна электрическа схема предложенного устройства. Устройство включени четыерехпроводных каналов св зи в групповое соединение содержит блоки разв зки цепей приема и передачи, выполненные в виде замкнутой многозвенной цепи, состо щей из трансформаторов 1, приемных согласующих усилителей 2 и передающих согласующих усилителей 3. На чертеже обозначены также средние точки а, в, с... и т.д. вторичных обмоток трансформаторов 1 и точки af в cf.. и т.д., затухание до которых от соответствующих The drawing shows a structural electrical circuit of the proposed device. The switching device four-wire communication channels in a group connection contains the isolating blocks of the receiving and transmitting circuits made in the form of a closed multi-link circuit consisting of transformers 1, receiving matching amplifiers 2 and transmitting matching amplifiers 3. The drawing also indicates the midpoints a, b , with ..., etc. secondary windings of transformers 1 and points af in cf .., etc., attenuation to which from the corresponding
15 точек а,в,с... и т.д. в обе стороны замкнутой многозвенной цепи одинаково.15 points a, b, c ... etc. on both sides of a closed multi-link chain in the same way.
Устройство работает следующим образом .The device works as follows.
Сигнал из приемной цепи канала черезThe signal from the receiving circuit of the channel through
20 соответствующий приемный согласующий усилитель 2 поступает на первичную обмотку соответствующего трансформатора 1, во вторичной обмотке которого по вл етс напр жение и. Под действием этого напр же20, the corresponding receiving matching amplifier 2 is supplied to the primary winding of the corresponding transformer 1, in the secondary winding of which voltage appears and. Under the influence of this
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792726533A SU788432A1 (en) | 1979-02-12 | 1979-02-12 | Device for connecting four-wire communication channels into ground connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792726533A SU788432A1 (en) | 1979-02-12 | 1979-02-12 | Device for connecting four-wire communication channels into ground connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU788432A1 true SU788432A1 (en) | 1980-12-15 |
Family
ID=20810981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792726533A SU788432A1 (en) | 1979-02-12 | 1979-02-12 | Device for connecting four-wire communication channels into ground connection |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU788432A1 (en) |
-
1979
- 1979-02-12 SU SU792726533A patent/SU788432A1/en active
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