JPS5818316U

JPS5818316U - Solenoid coil drive circuit

Info

Publication number: JPS5818316U
Application number: JP11328981U
Authority: JP
Inventors: 静雄高橋
Original assignee: 日本電気ホームエレクトロニクス株式会社
Priority date: 1981-07-29
Filing date: 1981-07-29
Publication date: 1983-02-04

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図は本案の実施例に係るソレノイドコイル駆動回路
の回路図、第２図は第１図回路の各部の電圧波形を示す
タイムチャート、第３図は第１図　　−回路の電流に関
するタイムチャートである。Ｌ工・・・ソレノイドコイ／Ｌ／、　Ｑｌ・・・スイッ
チング用トランジスタ、Ｒ□およびＣ工・・・時定数回
路、３・・・演算増幅器、２・・・論理回路としてのナ
ントゲート、４・・・フリップフロップ回路、Ｄ２・・
・スイッチ素子。Fig. 1 is a circuit diagram of a solenoid coil drive circuit according to an embodiment of the present invention, Fig. 2 is a time chart showing voltage waveforms of each part of the circuit in Fig. 1, and Fig. 3 is a time chart related to current in the circuit shown in Fig. 1. It is. L engineering... Solenoid coil/L/, Ql... Switching transistor, R□ and C engineering... Time constant circuit, 3... Operational amplifier, 2... Nandt gate as logic circuit, 4 ...Flip-flop circuit, D2...
・Switch element.

Claims

[Claims for Utility Model Registration] A solenoid coil is connected in series to the emitter-collector path, a switching transistor controls the on/off of energization to the solenoid coil, and a change in the current flowing through the solenoid coil is detected as a voltage. a time constant circuit; an operational amplifier to which the detected voltage of the time constant circuit is applied as an inverting input; and an AND output of the output voltage of the operational amplifier and a rectangular wave control voltage arriving from the outside, and the switching transistor a logic circuit that operates on and off; a flip-flop circuit that is set by the rectangular wave control voltage and operated by the output voltage of the operational amplifier; a switch element for extracting the voltage, and a resistor network for dividing and extracting a reference DC voltage and supplying a voltage that is the sum of the divided voltage, the DC voltage, and the output voltage of the operational amplifier as a non-inverting input of the operational amplifier. The output voltage of the resistor network assumes a first value when the flip-flop circuit is set, and the output voltage of the operational amplifier assumes one value when the flip-flop circuit is reset. and when the output of the operational amplifier represents the other value when the flip-flop circuit is reset and the output of the operational amplifier represents the other value.
and a third value located between the second value and the solenoid coil drive circuit, wherein the solenoid coil drive circuit exhibits a third value located between the second value and becomes a threshold level for the detection voltage of the time constant circuit.