SU454700A1 - Relay trigger - Google Patents

Description

one

The invention relates to a pulse technique.

Relay triggers are known that contain a remote switch and two relays, the first winding pins of which are connected to the corresponding trigger inputs, and the second pins through the closing and disconnecting contacts of the remote switch with the power bus.

However, the known triggers consume energy for the entire duration of the input signal. In addition, the pulse shape on the winding of a remote switch is a falling exponent, which reduces the reliability of the trigger.

The aim of the invention is to reduce power consumption when controlling a siphal of unlimited duration.

For this, the trigger additionally contains two / C-release delay circuits, each C-release delay circuit connected in parallel to the relay windings, the remote switch windings connected to the power supply terminal by the closing contacts of the respective relays.

The drawing shows a circuit diagram of a trigger.

The relay trigger contains a remote switch 1, a relay 2, 3 with closing contacts 2-1, 3-1, capacitors 4, 5, resistors 6, 7, closing contact 1-1 and opening contact 1-2, as well as contacts 1-3 , 1.4 remote switch 1.

The windings of the remote switch 1 are connected to the power bus by closing contacts 2-1.3-1 of the relay 2, 3. The windings of the relay 2, 3 are bounded by capacitors 4, 5 and resistors 6, 7 connected in series. One of the terminals of relay 2 is the trigger input, and the other is connected to the power bus via the closing contact 1-1 of the remote switch 1. One of the terminals of relay 3 is the second input of the trigger, and the other output is connected to the power bus by the break contact 1-2 of the remote switch 1. Contacts 1-3, 1- 4 remote switches 1 ommutiruyut iagruzku trigger. The trigger works as follows.

In the initial state, when a control signal of unlimited duration is applied to the input 8, the relay trigger is in one of stable states, it does not consume energy from the power source, since the windings of switch 1 and relay 2 are disconnected from the power supply, and the winding of relay 3 is not input signal is received.

When switching the signal to input 9, relay 3 is triggered simultaneously through a resistor

7 charging capacitor 5. Terminals 3-1

relay 3, remote switch 1 is connected to the power bus and another stable state is being transferred, simultaneously switching external circuits with pins 1-3, 1-4.

Contact 1-2 of switch 1 of relay 3 is disconnected from the power source, and contacts 3-1 of this relay open only after the time required for a significant discharge of capacitor 5 through resistor 7 and relay 3 winding. At the same time, the required pulse duration is provided by selecting capacitors 4 , 5 and resistors 6, 7.

In the new steady state, the relay trigger does not consume electricity from the power source, since the windings of the remote switch 1 and relay 3 are disconnected from the power source, and the winding of relay 2 does not receive an input signal.

The voltage pulse on the winding of the remote switch of the relay trigger has a rectangular shape with an amplitude that is almost the same as the voltage of the power source due to the insignificant voltage drop on the relay contacts, which indicates the high reliability of the proposed relay trigger.

Subject invention

A relay trigger containing a remote switch and two relays, the first terminals of the windings of which are connected to the corresponding trigger inputs, and the second terminals through the closing and opening contacts of the remote switch, with a power supply characterized in that

In order to reduce power consumption when controlling for an unlimited duration signal, it additionally contains two / C release delay circuits, each RC circuit for the release delay is connected in parallel to the relay windings, the remote switch windings are connected to the power bus by the make contacts of the corresponding relays.

BoD 8 Log 9

N /

1U LV

7-7; -2 1-3

PM