SU1007198A1 - Three-channel relay flip-flop - Google Patents

Abstract

THREE-CHANNEL RELAY TRIGGER, contains in each channel the first and second relays and the remote switch, the first terminals of the windings of which are connected to the negative power bus, diodes, characterized in that, in order to reduce the power of the input signal, additional relays are introduced into each channel the windings of which are connected to the common input of the trigger, and the second terminals of the windings of additional relays are connected to the input of the corresponding channel of the three-channel relay trigger, the second terminals of the windings of the first and second p Each channel through the disconnecting contacts of the second and first relay, respectively, the switching contact of the remote switch and the first closing contact of the additional relay of its channel are connected to the positive power bus, and through the diodes to the second terminals of the windings of the remote switch of its channel, which through the closing contacts -. i respectively the first and second relays are connected to the blocking circuit, (L which is connected via a serial connection of the second and first closing contacts to the additional relays of each channel and its previous channel, respectively, to the positive power bus. a, a la (T FC "

Description

The invention relates to automatic and can be used in three channel control systems. Known is a three-channel relay trigger containing relays, resistors, diodes ij. The disadvantage of this device is large power consumption. Also known is a three-channel relay trigger containing a relay, remote switches, resistors, diodes 21. A disadvantage of the known device is a significant power consumption along the input circuits. The aim of the invention is to reduce the power of the input signals. The target is achieved by the fact that in a three-channel relay trigger containing in each channel the first and second relays and remote switches, the first terminals of the windings are connected to the negative power rail, diodes, and additional channels are added to each channel. main relays, the first winding pins of which are connected to the common trigger input, and the second winding pins of the additional relays are connected to the input of the corresponding channel of a three-channel relay, three, the second winding pins of the first and second relays of each channel through the break contacts of the second and first relays the switch and the first closing contact of the additional relay of its channel are connected to the positive power bus, and through the isolating diodes to the second terminals of the bct. istantsionno th switches its channel, which via make contacts of the first and second relays are connected to the blocking circuit, which, via a serially coupled second and fifth closing ervogo additional relay contac comrade preceding it and each channel respectively connected to the positive power bus. FIG. 1 is a schematic diagram of a three-channel relay trigger; in fig. 2 - diagrams of the trigger operation at various combinations of signals at the inputs, where TC is the duration of the input signals on each channel; T - the duration of the pause between input signals; , is the duration of the output signals of each channel; And „- input signals of the first, second and third channels, respectively; 2.3 output signals of the first, second and third channels (O or 1), respectively. Trehka} The first relay trigger (Fig. 1) contains in each channel relays 1 with the first and second closing contacts 2 and 3, respectively, relay 4 with contacts 5 and b, relay 7 with contacts 8 and 9, remote Switch 10 with a working winding and breaker winding and with switching contacts 11 and 12, decoupling diodes 13-15. The windings of the relay 1 of the three channels relative to the common input 16 form the input part of the trigger, and the contacts 12 of the remote switch 10 of the three channels relative to the common output 17 form the output part. The input and output parts of the trigger are separated between themselves and the logical part of the trigger, which allows connecting their common points to plus or minus a common or autonomous power source depending on the use of the trigger. The first winding terminals of relay 1 are combined and brought to common input 16 of the trigger, the second winding terminals of relay 1 are connected to the corresponding trigger inputs 18-20. The second winding terminals of relay 4 and 7 of each channel through contacts 8 and 6 respectively and the switching contact of remote switch 11, and contact 2 of relay 1 is connected to the positive power bus 21 and, via isolating diodes 13-14 and relay contacts 5 and 9, respectively, to the blocking circuit 22, which is connected in two out of three circuits to the positive power bus. The second terminals of the windings of the remote switch 10 of each channel through contacts 5 and 9 of relay 4 and 7 are connected to the trigger lock circuit 22 having outputs of 23-25 channels. The reset is performed by a signal at input 26: The device operates as follows. Prior to the arrival of signals 7p at the inputs 18-20 of relays 1, 4 and 7, and the remote switch 10 of each channel are in the initial state. In the event that one or all remote switches are not in the initial state, a positive polarity pulse signal is applied to input 26 Zero. In the initial state, at outputs 23–25, we have signals corresponding to O flip-flop. When signals are received, one of the inputs (for example, 18) of relay 1 is activated via input circuit 18 - relay 1 winding is common input 16. Relay 4 of the first channel is activated via a positive power supply bus 21 - contact 2 of the relay .1.- contact 11 of the remote switch 10 - contact 8 relay 7 relay coil 4 - minus power bus. Pin 3 Relay 1 and Pin 5:

, and 6 relays 4 are idle and state changes are not made. The signals at the outputs 23-25 correspond to the O flip-flop.

When the signal is removed from input 18, relay 1 and relay 4 release the cabin and the trigger circuit returns to its original state. When signals are received at any two inputs (for example, 18 and 19), relays 1 and 4 of the first and second channels are triggered from each one of their circuits. Relay 4 is blocked by the power supply bus 21 - contact 2-relay. 1 of the first canil - contact 3 of the relay 1 of the second channel - contact 5 of the relay 4 of the first (second) channel: - diode 13 of the first (second) channel - winding of the relay 4 of the first (second) channel. Relay 4 of the third channel is triggered via bus supply circuit 21, contact 2 of relay 1 of the first channel, contact 3 of relay 2 of the second channel contact 3 of relay 1 of the first channel contact 11 of the remote switch of the third channel - contact 8 of the relay 7 - relay 4 winding - minus bus power and is locked like relay 4 of the first and second channels. Contact 6 of the relay 4 of each channel at the time of the input pulse equal to disconnects the switching circuit of the relay 7. Remote switches 10 of the first, second and third channels operate on the positive side of the power supply bus 21 contact 2 of the first channel. Contact 3 of the second channel 1 contact 5 of the relay 4 of the first (second and third) channels - operating winding 1 of the remote switch 10 of the first (second and third) channels - the negative bus.

Contact 11 of remote switch 10 switches to turn-on circuit 7 of the corresponding channel. Contacts 12 remote switches 10 all three channels

output signals corresponding to a 1 trigger (the magnitude and polarity of the output signal is determined by connecting the output 17). When removed from inputs 18 and 19 of the signals

Relays 1 and 4 of all channels are released. The remote switch 10 remains in operation, at the output. dakh 23-25 signals correspond to 1. Trigger trigger off scheme

o channels are similar to the scheme of its inclusion. When the trigger is turned off, the relays 1, the relays 7, and the breaker windings of the remote switch operate: l 10 of each channel. Power off

5 flip-flop is delivered. . repeated signals simultaneously on two or three channels. At the same time, at the outputs 23-25, the signals correspond to O. Thus, when signals are received at any two or three inputs

0, the trigger circuit is triggered (or deactivated) on the trem-channels and from outputs 23-25, the signals corresponding to the on (1) or

- off (O) state of the trigger. This state of the trigger

it is retained even after the signals are removed from inputs 18-20 or triggered from the busbars. From the initial state, the trigger signals will be odd

0 parcels 1, 3 and 5, etc. signals on the trigger inputs, and off signals even parcels 2, 4 and 6, etc.

The positive effect of the proposed invention, 5 th invention in comparison with the known one, consists in galvanic isolation of the trigger inputs from its logic circuit, in reducing the input signal power by one channel by 10–15 to 15 times and using the trigger. regardless of the polarity of the input signal. A comparative analysis of the devices was carried out taking into account the use of the same type of elements in their schemes.

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Claims (1)

A THREE-CHANNEL RELAY TRIGGER, containing in each channel the first and second relays and a remote switch, the first windings of which are connected to the negative power bus, diodes, which, in order to reduce the input signal power, additional channels are introduced into each channel relays, the first leads of the windings of which are connected to the common input of the trigger, and the second leads of the windings of the additional relays are connected to the input of the corresponding channel of the three-channel relay trigger, the second leads of the windings of the first and second relays of the channel through the opening contacts of the second and first relays respectively, the switching contact of the remote switch and the first closing contact of the auxiliary relay of its channel are connected to the positive power bus, and through the decoupling diodes, to the second terminals of the windings of the remote switch of their channel, which through the closing contacts . Accordingly, the first and second relays are connected to the interlock circuit, which, through the serial connection of the second and first NO contacts of the additional relays of each and its previous channels, is respectively connected to the plus power bus. RfiTZOOT 'ns “