JPS59109108U

JPS59109108U - Plunger drive circuit

Info

Publication number: JPS59109108U
Application number: JP273183U
Authority: JP
Inventors: 徹金子
Original assignee: アルプス電気株式会社
Priority date: 1983-01-14
Filing date: 1983-01-14
Publication date: 1984-07-23

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]

第１図はプランジャ駆動回路の原理的な回路構成を示す
回路図、第２図は従来のプランジャ駆動回路の一例を示
す回路図、第３図はソレノイドに流れる電流の時間的変
化を示す特性図、第４図は本考案の一実施例を示す回路
図である。１・・・ソレノイド、２・・・直流電源、３・・・スイ
ッチ、７・・・駆動用トランジスタ、８・・・抵抗、１
０・・・コンデンサ、１１．１２・・・トランジスタ、
１３・・・抵抗。Figure 1 is a circuit diagram showing the principle circuit configuration of a plunger drive circuit, Figure 2 is a circuit diagram showing an example of a conventional plunger drive circuit, and Figure 3 is a characteristic diagram showing temporal changes in the current flowing through the solenoid. , FIG. 4 is a circuit diagram showing an embodiment of the present invention. 1... Solenoid, 2... DC power supply, 3... Switch, 7... Drive transistor, 8... Resistor, 1
0... Capacitor, 11.12... Transistor,
13...Resistance.

Claims

[Scope of utility model registration request]

(1) In a plunger drive circuit in which a driving transistor is connected to one end of the solenoid, and a driving current to the solenoid is supplied or cut off depending on whether the driving transistor is turned on or off, the other end of the solenoid is connected to a driving transistor. A driving means is provided in which a resistor and a switching means are connected in parallel with each other, and the switching means is turned off and on according to whether the driving transistor is turned on or off, and the solenoid is driven when the driving transistor is turned on. A plunger drive circuit characterized in that the current is configured to be reduced by the resistor.

(2) Utility model registration In claim (1), the driving means includes a charging/discharging circuit connected to the other end of the solenoid and charging and discharging according to turning off and on of the driving transistor; It is characterized by comprising a switching transistor that is turned on and off in accordance with the charging voltage of the charging and discharging circuit, and configured such that the switching means can be turned on and off in accordance with the turning on and off of the switching transistor. Plunger drive circuit.