SU385402A1 - THE DEVICE TO RECEIVE A PULSE OF A ROOM SET FOR AUTOMATIC TELEPHONE STATIONS INSTRUMENTS - Google Patents

THE DEVICE TO RECEIVE A PULSE OF A ROOM SET FOR AUTOMATIC TELEPHONE STATIONS INSTRUMENTS

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Publication number
SU385402A1
SU385402A1 SU1691934A SU1691934A SU385402A1 SU 385402 A1 SU385402 A1 SU 385402A1 SU 1691934 A SU1691934 A SU 1691934A SU 1691934 A SU1691934 A SU 1691934A SU 385402 A1 SU385402 A1 SU 385402A1
Authority
SU
USSR - Soviet Union
Prior art keywords
pulse
instruments
receive
resistor
automatic telephone
Prior art date
Application number
SU1691934A
Other languages
Russian (ru)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1691934A priority Critical patent/SU385402A1/en
Application granted granted Critical
Publication of SU385402A1 publication Critical patent/SU385402A1/en

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Description

Изобретение относитс  к электросв зи. Устройство может найти применение в приборах автоматических телефонных станций (АТС) дл  приема импульсов, передаваемых батарейным способом, и т. д.The invention relates to telecommunications. The device can be used in automatic telephone stations (PBX) devices for receiving pulses transmitted by the battery method, etc.

Известно устройство приема импульсов набора номера дл  приборов автоматических телефонных станций, содержащее / С-цепь и транзистор, в коллектор которого включена исполнительна  цепь. Чувствительность такого устройства высока , но оно искажает импульсы .A device for receiving dial pulses for automatic telephone exchanges is known, which contains a / C-circuit and a transistor, the collector of which includes an actuating circuit. The sensitivity of such a device is high, but it distorts the impulses.

Цель изобретени -уменьшение искажений импульсов. Достигаетс  она тем, что в предлагаемом устройстве между фильтром цепи питани , выполн ющим обычные функции разделени  посто нного и переменного (разговорного ) токов, и полюсом станционной батареи включен резистор, к которому подключен вход транзисторного каскада, причем эмиттер транзистора непосредственно соединен с указанным полюсом батареи, а база св зана с точкой соединени  резистора и фильтра питани  через / С-цепь, состо щую из двух параллельных ветвей, одна из которых содержит резистор, а друга  - последовательно соединенные резистор и конденсатор .The purpose of the invention is to reduce pulse distortion. It is achieved by the fact that in the proposed device between the power circuit filter, which performs the usual functions of dividing the direct and alternating (conversational) currents, and the pole of the station battery, a resistor is connected to which the input of the transistor stage is connected, and the emitter of the transistor is directly connected to the indicated battery pole and the base is connected to the connection point of the resistor and the power filter via the / C-circuit consisting of two parallel branches, one of which contains a resistor and the other is connected in series resistor and capacitor.

На фиг. 1 изображена схема устройства, подключенного к линии; на фиг. 2 - диаграммы , иллюстрирующие электрические процессы .FIG. 1 shows a diagram of a device connected to a line; in fig. 2 - diagrams illustrating electrical processes.

Эмиттер транзистора / и резистор 2 соединены с полюсом станционной батареи, второй вывод резистора 2 соединен с внутренним концом гюлуобмотки трансформатора питающего моста 3, раздел ющего цепи посто нного и разговорного токов. Аналогичное соединение выполн етс  при дроссельном фильтре питани  в случае конденсаторного питающего моста. База транзистора св зана со вторым выводом резистора 2 и фильтром питающего моста / С-цепью из двух параллельных ветвей, в одну из которых включен резистор 4, а в другую - резистор 5 и конденсатор 6.The emitter of the transistor / and the resistor 2 is connected to the pole of the station battery, the second terminal of the resistor 2 is connected to the inner end of the winding transformer of the power supply bridge 3 separating the DC and DC currents. A similar connection is made with a choke filter in the case of a capacitor supply bridge. The base of the transistor is connected to the second output of the resistor 2 and the supply bridge filter / C-circuit from two parallel branches, one of which includes a resistor 4, and the other includes a resistor 5 and a capacitor 6.

Сопротивлени  резисторов 2 и 7 соразмерны сопротивлени м обмоток обычных импульсных реле. Транзистор / в исходном состо нии заперт путем щунтировани  эмиттерного перехода резистором 8.The resistances of resistors 2 and 7 are proportional to the resistances of the windings of conventional impulse relays. The transistor / in the initial state is locked by shunting the emitter junction with a resistor 8.

Поступающий в базовую цепь транзистора ток гн, аналогичный по форме импульсному напр жению f/sx на резисторе 2, удерживает транзистор в состо нии насыщени , а через резистор 5 и конденсатор 6 протекает ток ic в виде импульсов, сопровождающих начало иThe current g entering the base circuit of the transistor, which is similar in shape to the pulse voltage f / sx on the resistor 2, keeps the transistor in the saturation state, and through the resistor 5 and the capacitor 6 the current ic flows in the form of pulses accompanying the beginning and

SU1691934A 1971-08-03 1971-08-03 THE DEVICE TO RECEIVE A PULSE OF A ROOM SET FOR AUTOMATIC TELEPHONE STATIONS INSTRUMENTS SU385402A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1691934A SU385402A1 (en) 1971-08-03 1971-08-03 THE DEVICE TO RECEIVE A PULSE OF A ROOM SET FOR AUTOMATIC TELEPHONE STATIONS INSTRUMENTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1691934A SU385402A1 (en) 1971-08-03 1971-08-03 THE DEVICE TO RECEIVE A PULSE OF A ROOM SET FOR AUTOMATIC TELEPHONE STATIONS INSTRUMENTS

Publications (1)

Publication Number Publication Date
SU385402A1 true SU385402A1 (en) 1973-05-29

Family

ID=20486273

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1691934A SU385402A1 (en) 1971-08-03 1971-08-03 THE DEVICE TO RECEIVE A PULSE OF A ROOM SET FOR AUTOMATIC TELEPHONE STATIONS INSTRUMENTS

Country Status (1)

Country Link
SU (1) SU385402A1 (en)

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