JPS6086934U - temperature measurement circuit - Google Patents
temperature measurement circuitInfo
- Publication number
- JPS6086934U JPS6086934U JP17856583U JP17856583U JPS6086934U JP S6086934 U JPS6086934 U JP S6086934U JP 17856583 U JP17856583 U JP 17856583U JP 17856583 U JP17856583 U JP 17856583U JP S6086934 U JPS6086934 U JP S6086934U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- input terminal
- operational amplifier
- terminal
- measurement circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Measurement Of Resistance Or Impedance (AREA)
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
第１図は従来例の温度計測回路のブロック図、第２図は
本発明の実施例の温度計測回路のブロック図である。
−
図中１は抵抗体温度センサー、２は変換回路、３〜７．
Ｒａ、Ｒｈは抵抗、ｉは線路抵抗、Ｅは電源、■は電圧
計、８，９は演算増巾器、１０，１０′は温度測定器、
１１は定電流回路を示す。FIG. 1 is a block diagram of a conventional temperature measurement circuit, and FIG. 2 is a block diagram of a temperature measurement circuit according to an embodiment of the present invention.
- In the figure, 1 is a resistor temperature sensor, 2 is a conversion circuit, 3 to 7.
Ra and Rh are resistances, i is line resistance, E is a power source, ■ is a voltmeter, 8 and 9 are operational amplifiers, 10 and 10' are temperature measuring devices,
11 indicates a constant current circuit.
Claims (1)
端子間を第１の抵抗で接続した第１の演算増巾器の正入
力端子に接続し、該抵抗温度センサーの他方の端子を出
力電圧の１／４の電圧を負入力端子に入力する第２の演
算増巾器の正入力端子に接続すると共に該抵抗体温度セ
ンサーの基準゛ 抵抗値に等しい値の抵抗を介してアー
スに接続し、又該第１の演算増巾器の正入力端子とアー
ス間には定電流を流すようにし、又該第２の演算増巾器
の出力端子と該第１の演算増巾器の負入力端子を該第１
の抵抗の値と等しい値の抵抗を介して接続したことを特
徴とする温度計測回路。One terminal of the resistor temperature sensor is connected to the positive input terminal of a first operational amplifier having a first resistor connected between the negative input terminal and the output terminal, and the other terminal of the resistor temperature sensor is output. Connect to the positive input terminal of a second operational amplifier that inputs 1/4 of the voltage to the negative input terminal, and connect to ground via a resistor with a value equal to the reference resistance value of the resistor temperature sensor. In addition, a constant current is caused to flow between the positive input terminal of the first operational amplifier and the ground, and a constant current is caused to flow between the output terminal of the second operational amplifier and the negative input terminal of the first operational amplifier. Connect the input terminal to the first
A temperature measurement circuit characterized in that the temperature measurement circuit is connected through a resistor having a value equal to the value of the resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17856583U JPS6086934U (en) | 1983-11-18 | 1983-11-18 | temperature measurement circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17856583U JPS6086934U (en) | 1983-11-18 | 1983-11-18 | temperature measurement circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6086934U true JPS6086934U (en) | 1985-06-14 |
| JPH0127070Y2 JPH0127070Y2 (en) | 1989-08-14 |
Family
ID=30387649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17856583U Granted JPS6086934U (en) | 1983-11-18 | 1983-11-18 | temperature measurement circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6086934U (en) |
-
1983
- 1983-11-18 JP JP17856583U patent/JPS6086934U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0127070Y2 (en) | 1989-08-14 |
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