JPH0361540U - - Google Patents
Info
- Publication number
- JPH0361540U JPH0361540U JP12216989U JP12216989U JPH0361540U JP H0361540 U JPH0361540 U JP H0361540U JP 12216989 U JP12216989 U JP 12216989U JP 12216989 U JP12216989 U JP 12216989U JP H0361540 U JPH0361540 U JP H0361540U
- Authority
- JP
- Japan
- Prior art keywords
- wiring
- resistance temperature
- terminal
- resistor
- inverting input
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
第１図は本考案に係る測温抵抗体による温度測
定回路の一実施例を示す回路構成図、第２図およ
び第３図は従来の温度測定方式を説明するための
回路図である。
１……測温抵抗体、２−１……第１の配線、２
−２……第２の配線、２−３……第３の配線、３
……定電流回路（ＣＣＳ）、Ａ２……演算増幅器
、８……入力抵抗、９……帰還抵抗。
FIG. 1 is a circuit configuration diagram showing an embodiment of a temperature measuring circuit using a resistance temperature detector according to the present invention, and FIGS. 2 and 3 are circuit diagrams for explaining a conventional temperature measuring method. 1...Resistance temperature sensor, 2-1...First wiring, 2
-2...Second wiring, 2-3...Third wiring, 3
... Constant current circuit (CCS), A2 ... Operational amplifier, 8 ... Input resistance, 9 ... Feedback resistance.
Claims (1)
の配線と、前記測温抵抗体の他端に接続される第
３の配線と、前記第１の配線および第３の配線を
経由して前記測温抵抗体に定電流を流す定電流回
路と、その反転入力端が入力抵抗を介して前記第
１の配線の終端に連接され、その非反転入力端が
前記第２の配線の終端に連接され、さらにその反
転入力端と出力端との間に前記入力抵抗と等しい
値の帰還抵抗を接続してなる演算増幅器とを具備
することを特徴とする測温抵抗体による温度測定
回路。 a first and a second connected to one end of the resistance temperature sensor;
a third wiring connected to the other end of the resistance temperature detector, and a constant current circuit that flows a constant current to the resistance temperature detector via the first wiring and the third wiring. , whose inverting input end is connected to the terminal end of the first wiring via an input resistor, its non-inverting input terminal is connected to the terminal end of the second wiring, and further between the inverting input terminal and the output end. and an operational amplifier formed by connecting a feedback resistor having a value equal to the input resistor to the input resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12216989U JPH0361540U (en) | 1989-10-20 | 1989-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12216989U JPH0361540U (en) | 1989-10-20 | 1989-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0361540U true JPH0361540U (en) | 1991-06-17 |
Family
ID=31670182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12216989U Pending JPH0361540U (en) | 1989-10-20 | 1989-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0361540U (en) |
-
1989
- 1989-10-20 JP JP12216989U patent/JPH0361540U/ja active Pending
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