JPH0279467U - - Google Patents
Info
- Publication number
- JPH0279467U JPH0279467U JP15861988U JP15861988U JPH0279467U JP H0279467 U JPH0279467 U JP H0279467U JP 15861988 U JP15861988 U JP 15861988U JP 15861988 U JP15861988 U JP 15861988U JP H0279467 U JPH0279467 U JP H0279467U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- resistor
- output
- measurement terminal
- follower
- 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
- 238000005259 measurement Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Description
図面は本考案の一実施例を示す回路図である。
１…基準電圧源、２…電流制御アンプ、３…エ
ラーアンプ、４…電流設定用抵抗器、７…電圧フ
オロア、１０…バツフアアンプ、Ｔｈ…サーミス
タ、Ｍ…メータ。
The drawing is a circuit diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Reference voltage source, 2... Current control amplifier, 3... Error amplifier, 4... Current setting resistor, 7... Voltage follower, 10... Buffer amplifier, Th... Thermistor, M... Meter.
Claims (1)
イードバツク電圧との差電圧を増幅する電流制御
アンプと、このアンプの出力端と測定端子との間
に設けられて測定出力電流に比例した電圧信号を
得る定電流設定用抵抗器と、この抵抗器の測定端
子側電圧を高入力抵抗で検出する電圧フオロアと
、この電圧フオロアの出力と前記抵抗器の他端の
電圧との差から前記電流制御アンプのフイードバ
ツク電圧を得るアンプ回路と、前記電圧フオロア
の出力電圧からサーミスタの抵抗値に比例した電
圧信号を測定端子に出力するバツフアとを備えた
ことを特徴とするサーミスタの抵抗測定装置。 A current control amplifier that amplifies the difference voltage between the reference voltage source voltage and a feedback voltage proportional to the measured output current, and a current control amplifier that is provided between the output end of this amplifier and the measurement terminal to generate a voltage signal proportional to the measured output current. A constant current setting resistor to obtain, a voltage follower that detects the voltage on the measurement terminal side of this resistor with a high input resistor, and the current control amplifier based on the difference between the output of this voltage follower and the voltage at the other end of the resistor. 1. An apparatus for measuring resistance of a thermistor, comprising: an amplifier circuit for obtaining a feedback voltage of the voltage follower; and a buffer for outputting a voltage signal proportional to the resistance value of the thermistor from the output voltage of the voltage follower to a measurement terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15861988U JPH0279467U (en) | 1988-12-06 | 1988-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15861988U JPH0279467U (en) | 1988-12-06 | 1988-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0279467U true JPH0279467U (en) | 1990-06-19 |
Family
ID=31439107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15861988U Pending JPH0279467U (en) | 1988-12-06 | 1988-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0279467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015108543A (en) * | 2013-12-04 | 2015-06-11 | 株式会社デンソー | Temperature detection device |
| JP2022106378A (en) * | 2021-01-07 | 2022-07-20 | ミツミ電機株式会社 | Temperature measuring circuit and temperature measuring device |
-
1988
- 1988-12-06 JP JP15861988U patent/JPH0279467U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015108543A (en) * | 2013-12-04 | 2015-06-11 | 株式会社デンソー | Temperature detection device |
| JP2022106378A (en) * | 2021-01-07 | 2022-07-20 | ミツミ電機株式会社 | Temperature measuring circuit and temperature measuring device |
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