JPH0352643U - - Google Patents
Info
- Publication number
- JPH0352643U JPH0352643U JP11446189U JP11446189U JPH0352643U JP H0352643 U JPH0352643 U JP H0352643U JP 11446189 U JP11446189 U JP 11446189U JP 11446189 U JP11446189 U JP 11446189U JP H0352643 U JPH0352643 U JP H0352643U
- Authority
- JP
- Japan
- Prior art keywords
- potential terminal
- temperature measuring
- current source
- constant current
- terminal
- 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 3
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
第１図はこの考案の一実施例を示す回路構成図
、第２図はその一部の具体的回路構成図、第３図
及び第４図は夫々従来装置の一例を示す構成図で
ある。
１……測温抵抗体、５……作動増幅器、１１，
１２……定電流源、Ｈ……第１電位端子、Ｌ……
第２電位端子、Ｇ……基準電位端子である。
FIG. 1 is a circuit configuration diagram showing one embodiment of this invention, FIG. 2 is a specific circuit configuration diagram of a part thereof, and FIGS. 3 and 4 are configuration diagrams each showing an example of a conventional device. 1... Resistance temperature detector, 5... Working amplifier, 11,
12... constant current source, H... first potential terminal, L...
The second potential terminal, G... is a reference potential terminal.
Claims (1)
位端子及び基準電位端子に夫々接続された測温抵
抗体と、 上記第１電位端子に非反転入力端子が接続され
、上記第２電位端子に反転入力端子が接続された
作動増幅器と、 上記第１電位端子に接続された第１定電流源と
、 上記第２電位端子に接続され、上記第１定電流
源と等しい電流値を有する第２定電流源と を備え、上記差動増幅器の出力側に上記測温抵抗
体の抵抗値に関連した情報を得るようにしたこと
を特徴とする温度測定装置。[Claims for Utility Model Registration] A temperature measuring device with a three-wire connection, including a temperature measuring resistor whose one end is connected to a first potential terminal, and whose other ends are connected to a second potential terminal and a reference potential terminal, respectively; an operational amplifier having a non-inverting input terminal connected to the first potential terminal and an inverting input terminal connected to the second potential terminal; a first constant current source connected to the first potential terminal; a second constant current source connected to the potential terminal and having a current value equal to the first constant current source, and configured to obtain information related to the resistance value of the temperature measuring resistor on the output side of the differential amplifier. A temperature measuring device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11446189U JPH0352643U (en) | 1989-09-29 | 1989-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11446189U JPH0352643U (en) | 1989-09-29 | 1989-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0352643U true JPH0352643U (en) | 1991-05-22 |
Family
ID=31662829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11446189U Pending JPH0352643U (en) | 1989-09-29 | 1989-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012112950A (en) * | 2010-11-19 | 2012-06-14 | Ls Industrial Systems Co Ltd | Temperature control module, and temperature control apparatus having the same |
-
1989
- 1989-09-29 JP JP11446189U patent/JPH0352643U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012112950A (en) * | 2010-11-19 | 2012-06-14 | Ls Industrial Systems Co Ltd | Temperature control module, and temperature control apparatus having the same |
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