JPS6093934U

JPS6093934U - temperature measurement circuit

Info

Publication number: JPS6093934U
Application number: JP18718783U
Authority: JP
Inventors: 村田　清
Original assignee: 日本電気株式会社
Priority date: 1983-12-03
Filing date: 1983-12-03
Publication date: 1985-06-26

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図は従来の温度測定回路の構成図である。１・・・サーミスタ、２・・・定電流回路、３・・・電
圧測定回路。第２図はサーミスタの抵抗値一温度特性のグラフである
。Ａ・・・サーミスタ１の特性曲線、Ｂ・・・サーミスタ
２の特性曲線。第３図は本考案の一実施例を示す回路構成図である。１１．１２・・・サーミスタ、１３・・・定電流回路、
１４・・・電圧測定回路。第４図はサーミスタの抵抗値一温度特性のグラフである
。Ｃ・・・サーミスタ１１の特性曲線、Ｄ・・・サーミス
タ１２の特性曲線、Ｅ・・・サーミスタ１１．１２の並
列接続の特性曲線。FIG. 1 is a block diagram of a conventional temperature measurement circuit. 1... Thermistor, 2... Constant current circuit, 3... Voltage measurement circuit. FIG. 2 is a graph of the resistance value versus temperature characteristic of the thermistor. A: Characteristic curve of thermistor 1, B: Characteristic curve of thermistor 2. FIG. 3 is a circuit diagram showing an embodiment of the present invention. 11.12... Thermistor, 13... Constant current circuit,
14... Voltage measurement circuit. FIG. 4 is a graph of the resistance value versus temperature characteristic of the thermistor. C...Characteristic curve of thermistor 11, D...Characteristic curve of thermistor 12, E...Characteristic curve of parallel connection of thermistors 11 and 12.

Claims

[Scope of utility model registration request]

1. A temperature measurement circuit comprising: a plurality of thermistors connected in parallel; a constant current circuit that supplies a constant current to these thermistors; and a voltage measurement circuit connected in parallel with the thermistors.