JPS5824812U

JPS5824812U - temperature control circuit

Info

Publication number: JPS5824812U
Application number: JP11886781U
Authority: JP
Inventors: 正之鳴尾
Original assignee: 松下電工株式会社
Priority date: 1981-08-08
Filing date: 1981-08-08
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 drawings]

第１図は従来例を示す回路図、第２図はこの考案の一実
施例を示す回路図である。１′・・・第１固定抵抗、２′・・・可変抵抗器、２′
ａ・・・摺動タップ、３′・・・第２固定抵抗、４・・
・比較器、５・・・トランジスタ、６・・・リレー、＋
ｖユ・・・直流電圧源、Ｎ′・・・接続中点。FIG. 1 is a circuit diagram showing a conventional example, and FIG. 2 is a circuit diagram showing an embodiment of this invention. 1'...First fixed resistor, 2'...Variable resistor, 2'
a...Sliding tap, 3'...Second fixed resistor, 4...
・Comparator, 5...transistor, 6...relay, +
VU...DC voltage source, N'...Connection middle point.

Claims

[Scope of utility model registration request]

a comparator that compares an input level corresponding to the detected temperature with a predetermined reference level to obtain a comparison judgment output; a switching circuit that receives the comparison judgment output of the comparator and controls on/off a heat source drive circuit; A series circuit of first and second fixed resistors connected between a DC power source and ground, a variable resistor connected between the DC power source and ground, and a contact point between the connection point of the first and second fixed resistors and the variable resistor. a reference value setting circuit comprising a third fixed resistor connected between the first and second fixed resistors and a reference value input terminal of the comparator;