SU1762405A1 - Relay switches - Google Patents

Description

one

(21) 4916902/21

(22) 01/09/91

(46) 09/15/92. Bul №34

(71) Design Office Electropribor

(72) E.I.Demsky

(56) USSR Author's Certificate No. 362494, cl. H 03 K 23/74, 1973.

USSR author's certificate N 1078630, cl. H 03 K 23/74. 1982. (54) RELAY SWITCH

(57) The invention relates to the field of automation, telemechanics, automation and control of production processes. The relay switch contains in each cell a relay with 4 windings (1, 2, 3. 4), 3 first switching contact groups (1-1, 2-1, 3-1), 3 second switching contact groups (2-2, 3 -2, 4-2), 3 dissolving diodes (5, 6, 7). 1 transistor (9), 4 resistors (11, 12, 17, 18), 1 control contact (19). 1 il.

The invention relates to automation, remote control, automation and control of production processes and can be used in control devices as a switch, command distributor or pulse counter.

A device is known comprising a blocking and two control buses, switching relays, decoupling diodes, and opening and closing relays.

The disadvantages of such a device are low reliability due to the possibility of disrupting the functioning of the device due to the variation in the response times and release of different relay instances. For example, for the device to operate, the condition should be met that the turn-on time of the closing contact of one relay should be less than the opening time of the closing and opening contacts of two different relays, which requires a special selection of the circuit elements of the device; the complexity of the design, due to the presence of a large number of circuit elements (in

each bit has two relays with three contact groups and a diode), the failure of which entails a malfunction of the device as a whole, two control buses, which makes it necessary to have a special pulse generator at the input, a special circuit for resetting the device to its initial state power supply voltage; small functionality due to the inability to receive output signals from each bit of a duration equal to the duration of the pause between two output pulses.

The closest in technical essence is a device containing a key for resetting, countable cells on a relay with first and second switching contact groups and a separation diode.

The disadvantage of this device is limited functionality due to the inability to receive output signals from each bit.

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duration equal to the duration of the pause between the pulses of the input signals.

The aim of the invention is to expand the functionality of the device by obtaining output signals from each bit of a duration equal to the length of the pause between the pulses of the input signals.

The goal is achieved by the fact that in the device containing cells on the relay, the circuit for switching on the next relay connected to the device input, built on the first switching contact groups of the relay and the separation diodes, and the disconnecting contacts of the previous cell, except the last one, are connected to the switching contacts of the relay the next cell, the disconnecting contact of the relay of the last but one cell is connected to the output bus of the device, and the closing contacts of the relay are connected through the diodes connected in the forward direction with the first terminals of the relay coils of its own and subsequent cells, the second terminals of the windings of all relays are connected to the negative power supply bus, a self-pickup circuit of the relay on the second switching contact relay groups, where the disconnecting contacts of the next cell relay are connected to the switching contacts of the previous cell’s relay, except for the first one A transistor, a diode, a first, a second, a third, and a fourth resistors are introduced, a control contact, and a third decoupling diode connected in the forward direction to the circuit is connected to each cell. its contact of the second switching contact groups of the relay, except the first cell, the anodes of the third diode of each cell are connected to the corresponding bit outputs of each cell, and the anode of the third diode of the first cell is connected to the break contact of the second switching contact group of the second cell relay, the cathodes of the third diode are connected to the first terminals of the relay coils, the emitter of the transistor is connected to the positive power supply bus through the third resistor, which together with the fourth resistor forms a divider eg voltage power source, a collector connected to the inlet seal-in circuit, and the base - through a divider formed on the first and second resistors and a diode connected in the reverse direction, is connected to the input device and through contact with the positive control bus power source.

The drawing shows the principal electrical circuit of the proposed device,

The device contains in each cell

neutral electromagnetic relays with windings 1, 2, 3, 4, the first switching contact groups 1-1, 2-1, 3-1, the second switching contact groups 2-2, 3-2, 4-2, dissolving diodes 5 , 6, 7, the bit outputs of the cells 8-1. 8-2, 8-3, 8-4. as well as transistor 9, diode 10, resistors 11, 12, 17, 18, positive 13, negative 14 of the power supply bus, input 15, output bus 16, and contact

5 management 19.

The device works as follows.

When the power supply voltage is switched to the positive 13 and negative 14 buses of the device, relay 1 is triggered through the open transistor 9 operating in the key mode and the closed contacts of the self-pickup relay. Relay 1 by closing contacts 1-1 through a separate diode 6 connected in the forward direction prepares the turn-on circuit of the next relay 2, and through diode 5 connected in the forward direction prepares the holding circuit of the previous relay 1. At the same time, Output 8-1 of the zero cell appears the output signal. When a control pulse arrives at the input bus 15 (control contact 19 is closed), through the closing contact 1 - relay 1 and the separation diode b, relay 2 is triggered, through diode 10, switched on in the right direction and delhi A driver consisting of transistors 11 and 12, the input pulse voltage is supplied to

0 base of the transistor 9 and closes it. The relay 1 through the separation diode 5 remains on until the end of the control pulse supply. Transistor 9 turns off the voltage from the discharge output 8-1 zero

5 cells. Relay 2, triggered, with its first switching contact group 2-1 prepares the turn-on circuit for the next relay 3, and the second switching contact group 2-2 disconnects the circuits

0 of the power supply relay 1-1 and through the separation diode 7 prepares the self-pickup circuit of the relay 2. When the control pulse is removed from the input bus 15, the positive voltage is removed from the base of transistor 9, the relay

5 1 cells of zero discharge through diode 5 and a relay 2 cells of the first discharge through diode 6. Transistor 9 opens and connects the voltage of the positive 13 power supply bus to relay 2 (through its closing contact 2-2) and the output output 8- 2 cells of the first digit. Relay 1 is turned off and the first switching contact group 1-1 prepares the turn-on circuit for the next relay 3.

Further operation of the device is similar to the above.

When the nth (4th) control pulse arrives at the input of the switch 15 (relay 4 is in working condition), the input pulse positive voltage enters the output 16 bus of the device, transistor 9 closes and the last discharge switch 4 turns off . A switching contact group 4-2 prepares a turn-on circuit for a zero-bit cell relay 1.

When the control pulse is removed, the device is reset.

A voltage divider made on resistors 17, 18 provides the operation mode of transistor 9.

Introduction to the proposed device of a transistor, a diode, the first and second resistors, and in each cell of the third development diode allowed to expand the functionality of the device in terms of obtaining output signals from each bit with a duration equal to the length of the pause between the pulses of the input signals.

Claims (1)

Claims of the invention A relay switch containing cells on a relay, a circuit for switching on a subsequent relay and holding a previous relay connected to the input of the device, made on the first switching relay contact groups and isolation diodes, and the disconnecting contacts of the previous cell, except the last one, connected to the switching contacts of the follower relay, gap-1 ъ 8-2 the relay contact of the penultimate cell is connected to the output bus of the device, and the relay relay contacts are connected in the forward direction through the first terminals of the relay windings of their own and subsequent cells, the second windings of all relays are connected to the negative power supply bus, the relay circuit on the second switching contact groups of the relay, while the disconnecting contacts of the next cell relay are connected to the switching contacts of the relay of the previous cell, besides the first one, characterized in that output signals from each bit of a duration equal to the length of the pause between the pulses of the input signals, a transistor, a diode, a first, second, third, fourth resistors, a control contact, and a third decoupling diode connected in the forward direction the contact of the second switching contact groups of the relay, except the first cell, the anodes of the third diodes of each cell are connected to the corresponding bit outputs of each cell, and the anode of the third / / sdz n,: the cell is connected to by tapping the contact of the second switching terminal group of the second cell relay, the cathodes of the third diodes are connected to the first terminals of the relay coils through a third resistor, which form the voltage source divider with the fourth resistor, the emitter of the transistor is connected to the positive power supply bus, the collector is connected to the input of the circuit self-pickup, and the base through a divider, which is made on the first and second resistors and a diode connected in the opposite direction, is connected to the input of the device and through the control contact with positively bus power source.