SU1359817A1 - Relay-button switch - Google Patents

Abstract

The invention relates to automation and can be used for switching electrical circuits. The aim of the invention is to increase reliability. When a control button 3 is briefly pressed at any cell, the relay 1 of this cell is triggered, opening its contact 2. When pressing the control button 3, any other cell first turns off turnips 1 of the previously selected cell and then turns on relay I of this cell. 1 il. G (L.S. ate with 00

Description

 13

The invention relates to automation and can be used for switching electrical circuits.

The aim of the invention is to increase reliability.

The drawing shows a circuit diagram of the proposed device.

The relay and button switch in each cell contains a relay I with opening contact 2, a control button with opening contact 3, a zener diode 4 connected in series with the relay winding 1. Contacts 2 and 3 are connected in series and connected in each canape to parallel-connected windings relays I and zener diode 4. All channels are connected in series and through a sliding resistor 5 are connected to power supply buses 6 and 7 (6 positive power lines, 7 - negative power lines).

The device works as follows.

When power is supplied to buses 6 and 7, the windings of the relay 1 of all cells are de-energized, since they are shunted by series-connected contacts 2 and 3.

When you click on the control button of a channel, for example the second,. the relay of this channel is turned on, contact 2 is opened. When contact 3 of the second channel control button returns to its initial state, relay 1 remains in the on-state. When you press the control button of another, for example, the first channel, the relay of the previously switched on channel, the second and the second, then its contact 2 is closed, after which the relay I of the first channel is turned on. .

Compiled by A. Karetnikov. . Editor N.Slobod nickname Techred M.DidykKorrektor L.Pilip nko

Order 6 58/52 Circulation 697 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk Nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

where u

7 2 -.

By simultaneously pressing two or more control buttons previously turned on. The 1st channel is turned off and no channel can be turned on. This ensures the exclusion of simultaneous excitation of several channels.

The operation of the device according to the described logic can be accomplished by performing, for example, the following relations:

IMT 5- U, + U,; U ,,,

where u

Pete

power supply voltage;

Uj is the voltage that falls on the resistor 5 during the excitation of one of the channels;

and - voltage, which is falling on the winding of relay 1 in its on state;

and. - stabilization voltage 4,

0

five

0

Claims (1)

Invention Formula Relay-pushbutton switch containing terminals for connecting the power source and the cells, each of which contains an electromagnetic relay with a contact group and a control button distinguished by the fact that, in order to increase reliability, a resistor is inserted into it, and a zener diode is inserted into each cell , in each cell, the relay coil and the zener diode are connected in series and bridged by series-connected disconnecting contacts of the relay and control buttons, all cells are connected in series and connected via a resistor to the output s for connecting a power source.