RU1802916C - Decoupler - Google Patents

Abstract

The invention relates to wired communications. The goal is to provide isolation of channels with different signal levels. The device comprises a galvanic isolation unit containing an isolation transformer 1 and two matching units 9, a first and second control unit 2 and 3, a first and second gear shifting unit 4 and 5, a first and second matching unit with load b and 7, a pulse generator 8 , The influence of one channel on another is eliminated due to the fact that the signal coming from one channel does not pass to another channel, but controls the transmission in it, which is carried out from another source, which may have other parameters, which allowsinteract over channels having different parameters, thereby achieving enhanced functionality. 1 ml

Description

The invention relates to the field of transmission of discrete information and may find application in systems for the reception and transmission of discrete information over communication lines with galvanic isolation.

The aim of the invention is to increase the functionality of the device by providing isolation of channels with signals of various levels, as well as increasing the reliability of transmission and reception, and using it both for transmitting and receiving information.

The invention is illustrated in the circuit diagram of a decoupling device.

The decoupling device comprises an isolation transformer 9, the first winding of which is connected to the first matching unit 10, as well as the first control unit 2, the first gear shifting unit 4 and the first load matching unit 6, the second gear shifting unit 5 and the second unit connected in series coordination with the load 7, as well as the second control unit 3 and the second matching unit 11, the inputs of which are connected to the terminals of the second winding of the isolation transformer 9, to the third winding of which o a pulse generator 8 is connected, the second input of the first b and second 7 of the load matching unit connected to the first output of the second 3 and first 2 control units, respectively, and to the first output of the first 10 and second 11 matching blocks, respectively, the first 2 and second 3 blocks the control consists of each of the first thyristor 12, 15, the base of which is connected to the first terminals of the first and second resistors (13, 14 and 16, 17, respectively), the collector and emitter of the first transistor (12, 15) are respectively the first and second output first 2 and second 3 control units, the second output of the first (13, 17) and second (14, 16) resistors are respectively the information input of the device (32, 35) and the second output of the first 2 and second 3 control units, the first 4 and 5, the transmission switching units consist of each of the second transistor (18, 21), the base of which is connected to the first output of the third resistor (19, 23) and through the fourth resistor (20, 22) to its emitter, the second output of the third resistor (19, 23) - terminals 38, 39, the collector and emitter of the second transistor (18, 21) are respectively channeling yuschim input device first to the second output of the first 4 and second 5 includant transmission unit, the first 6 and second 7

the load matching unit contains a third transistor (24, 28), the base of which is the first input of the first and second load matching units and is connected to the first output of the capacitor (27, 31) and the fifth resistor (26, 30), the second outputs which are combined and connected to the emitter of the third transistor (24, 28), the collector of which through the sixth resistor (25, 26) is connected to the power source (terminal 40, 41, the power source is not shown in the drawing) and is the output of the device, and the emitter of the third transistor (24. 28) is the second input of the first 6 and W cerned block 7

matching with the load.

The decoupling device operates as follows.

Blocks 10, 11 and transformer 9 perform galvanic separation of circuits

when receiving or transmitting digital signals presented in sequential format.

The selection of the direction of reception and transmission is carried out by the signal at inputs 38, 35 and

39, 32.

When installing the signal at inputs 38, 35 in the log. 1, and the signal at the inputs-39, 32; 35, 36 to the log. About there is a signal transmission from inputs 32, 33 to outputs 34, 35.

when installing the signal at the inputs 38, 35; 32, 33 to the log. Oh, and the signal at inputs 39, 32 to the log. 1, a signal is transmitted from inputs 35, 36 to outputs 37, 32.

When installing inputs 38, 35; 39, 32; 35,

36; 33, 32 simultaneously to the log state. O or 1 stops signaling in either direction.

The process of transmitting a signal from inputs 32, 33 to outputs 34, 35 occurs as follows

way.

When logic level 1 is applied to terminals 38, 35, and logic O is connected to terminals 35, 36, an output signal formation circuit is formed due to the open

a transistor 18 and a closed transistor 15. When a logic O level is applied to terminals 39, 32, a control stage is formed by closing the transistor 21.

If there is a switching frequency on the NZKz winding of the transformer 9 and when the unit level is applied to the terminals 32, 33 at the output of the block 6 matching the external load (terminals 34, 35), logic level 1 is formed, since by turning on the transistor 12 the H2Ka winding of the transformer 9 is shorted and the magnet- transformer wire goes into deep saturation, excluding the feed

switching voltage

HiKi transformer. In this case, the collector-emitter circuit of the transistor 24 is open. When applied to terminals 32. 33, the zero level transistor 12 is not turned on, the magnetic core of transformer 9 is not saturated, and the switching voltage is transmitted to the transformer HiKi winding. In this case, the transistor 24 is turned on and a logic O signal is generated at the output of the load matching unit 6 (terminals 34, 35).

The process of transmitting a signal from inputs 35, 36 to outputs 37, 32 is as follows.

When logic level 1 is applied to terminals 39, 32 and logic O is connected to terminals 32, 33, an output signal forming circuit is generated by an open transistor 21 and a closed transistor 12. When logic O is connected to terminals 38, 35, a control stage is formed. by closing the transistor 18.

The process of receiving a digital signal through a transformer 9 is similar to that described above. .

Thus, the decoupling device can be used for a bi-directional information transmission and reception system, as well as to increase the reliability and double the information transmission and reception speed.

The manufactured prototype device has the following technical data:

Claims (1)

switching voltage, V12.0 ± 0.6 switching frequency, kHz 2000 switching current, mA not more than 25 signal bandwidth, kHz. not more than 1000 load resistance, Ohm not less than 200 supply voltage, V 5.00, 25 Claims A decoupling device comprising an isolation transformer, the first winding of which is connected to a first matching unit, and also a first control unit, characterized in that, in order to be able to decouple channels with signals of different levels, the first unit is connected in series a gear shifter and a first load balancing unit, a second gear shifting unit and a second load balancing unit, as well as a second control unit and a second matching unit, the inputs of which are connected to the terminals of the second winding of the isolation transformer, to the third winding of which a pulse generator is connected, moreover, the second input of the first and second matching blocks with the load is connected to the first output of the first and second control units, respectively, and with the first output of the first and second matching units, respectively, and the second output of the first and second gears is connected to the second output of the first and second control units, respectively and with the second output, respectively, of the first and second matching blocks, and the first and second control units consist of each of the first transistor, the base of which is connected to the first terminals of the first and second resistors, the collector and emitter of the first transistors are respectively the first and second output of the first and second control units, the second output of the first and second resistors is respectively the information input of the device and the second output of the first and second control units, the first and second gears include each of the second transistor, the base of which is connected to the first output of the third resistor and through the fourth resistor is with its emitter, the second output of the third resistor, the collector and emitter of the second transistor respectively being the control input of the device, the first and second output of the first and second blocks for turning on the transmission, the first and second matching blocks with the load contain a third transistor, the base of which is the second input of the first and second blocks matching load and connected to the first output of the capacitor and the first register, the second conclusions of which are combined and connected to the emitter of the third transistor, the collector of which through the sixth resistor is connected to the power source is the output of the device, and the emitter of the third transistor is the first input of the first and second load balancing units.