JPH0380377U - - Google Patents
Info
- Publication number
- JPH0380377U JPH0380377U JP14212889U JP14212889U JPH0380377U JP H0380377 U JPH0380377 U JP H0380377U JP 14212889 U JP14212889 U JP 14212889U JP 14212889 U JP14212889 U JP 14212889U JP H0380377 U JPH0380377 U JP H0380377U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- differential amplifier
- resistance measuring
- measuring device
- power source
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
Description
第１図は本考案による多チヤネル抵抗測定装置
の一実施例を示す概略回路構成図、第２図は従来
の多チヤネル抵抗測定装置の一例を示す概略回路
構成図である。
２……電源、１１１，１１２…１１ｎ……抵抗
測定回路、Ｃ１……定電流源、Ｓ１〜Ｓ６……ス
イツチ、ＲＳ……レンジ抵抗、Ｒ１，Ｒ２……分
圧用抵抗、ＯＡ１……差動増幅器、Ｔ１……測定
端子、Ｔ０１，Ｔ０２……出力端子、Ｘ１……被
測定抵抗体。
FIG. 1 is a schematic circuit diagram showing an embodiment of a multi-channel resistance measuring device according to the present invention, and FIG. 2 is a schematic circuit diagram showing an example of a conventional multi-channel resistance measuring device. 2...Power supply, 11 1 , 11 2 ...11 n ...Resistance measurement circuit, C1... Constant current source, S1 to S6... Switch, RS... Range resistor, R1, R2... Voltage dividing resistor, OA1... ... Differential amplifier, T1 ... Measurement terminal, T 01 , T 02 ... Output terminal, X1 ... Resistor to be measured.
Claims (1)
されている多チヤンネル抵抗測定装置において、 前記各抵抗測定回路が、少なくとも、 前記電源の両端間に直列に接続された定電流源
、第１のスイツチ、第２のスイツチ及びレンジ抵
抗の直列回路と、差動増幅器と、前記第１のスイ
ツチと前記第２のスイツチとの接続点と前記差動
増幅器の非反転入力間に接続された第３のスイツ
チと、前記第２のスイツチと前記レンジ抵抗との
接続点と前記差動増幅器の非反転入力間に接続さ
れた第４のスイツチと、前記第１及び第２のスイ
ツチ間に接続された測定端子Ｔ１と、前記差動増
幅器の出力と共通電位点にそれぞれ接続された出
力端子とを具備することを特徴とする多チヤネル
抵抗測定装置。[Claims for Utility Model Registration] In a multi-channel resistance measuring device in which a plurality of resistance measuring circuits are connected in parallel to a common power source, each of the resistance measuring circuits is at least connected in series between both ends of the power source. a series circuit of a constant current source, a first switch, a second switch, and a range resistor, a differential amplifier, a connection point between the first switch and the second switch, and a non-inverting circuit of the differential amplifier. a third switch connected between the inputs; a fourth switch connected between the connection point between the second switch and the range resistor and the non-inverting input of the differential amplifier; 1. A multichannel resistance measuring device comprising: a measuring terminal T1 connected between two switches; and output terminals respectively connected to the output of the differential amplifier and a common potential point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14212889U JP2509631Y2 (en) | 1989-12-08 | 1989-12-08 | Multi-channel resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14212889U JP2509631Y2 (en) | 1989-12-08 | 1989-12-08 | Multi-channel resistance measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0380377U true JPH0380377U (en) | 1991-08-16 |
| JP2509631Y2 JP2509631Y2 (en) | 1996-09-04 |
Family
ID=31688968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14212889U Expired - Lifetime JP2509631Y2 (en) | 1989-12-08 | 1989-12-08 | Multi-channel resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2509631Y2 (en) |
-
1989
- 1989-12-08 JP JP14212889U patent/JP2509631Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2509631Y2 (en) | 1996-09-04 |
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