JPS5824943U

JPS5824943U - AC drive circuit for latching relay

Info

Publication number: JPS5824943U
Application number: JP11977981U
Authority: JP
Inventors: 西村　広海
Original assignee: 松下電工株式会社
Priority date: 1981-08-12
Filing date: 1981-08-12
Publication date: 1983-02-17

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案の一実施例の電気回路図である。１・・・ラッチングリレー、２．３・・・リレーコイル
、４・・・リレースイッチ、６・・・交流電源、１３・
・・全波整流回路、１４・・・定電圧回路、２３・・・
第１トランジスタ、２４・・・第２トランジスタ、２５
，３１゜３２、　３３．　３６．　３７．　４０・・・
抵抗、２６・・・第３トランジスタ、２７・・・リレー
駆動用コンデンサ、３０・・・第４トランジスタ、３５
・・・トランジスタ制御用コンデンサ。The drawing is an electrical circuit diagram of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Latching relay, 2.3... Relay coil, 4... Relay switch, 6... AC power supply, 13...
...Full wave rectifier circuit, 14... Constant voltage circuit, 23...
First transistor, 24...Second transistor, 25
, 31° 32, 33. 36. 37. 40...
Resistor, 26...Third transistor, 27...Relay drive capacitor, 30...Fourth transistor, 35
...Transistor control capacitor.

Claims

[Scope of utility model registration request]

In an AC drive circuit for a latching relay that self-maintains the switching mode of a relay switch corresponding to each excited relay coil by the excitation of each of a pair of relay coils, AC power is rectified by a full-wave rectifier circuit, and the rectified output is is stabilized by a constant voltage circuit, a first series circuit consisting of one relay coil and a first transistor, a second series circuit consisting of the other relay coil and a second transistor, and a third series circuit consisting of a resistor and a third transistor. The circuit and the relay driving capacitor are connected in parallel to provide an output from the constant voltage circuit through a fourth transistor, and the fourth transistor becomes conductive when the output from the constant voltage circuit exceeds a predetermined value. When the fourth transistor is turned on, the output from the constant voltage circuit is applied to the base of the first transistor through a parallel circuit consisting of a transistor control capacitor and a resistor to make the first transistor conductive.
1. An AC drive circuit for a latching relay, characterized in that when the transistor is cut off, the voltage of the relay drive capacitor is applied to the base of the second transistor to make the second transistor conductive.