JPS61180399U - - Google Patents
Info
- Publication number
- JPS61180399U JPS61180399U JP6436185U JP6436185U JPS61180399U JP S61180399 U JPS61180399 U JP S61180399U JP 6436185 U JP6436185 U JP 6436185U JP 6436185 U JP6436185 U JP 6436185U JP S61180399 U JPS61180399 U JP S61180399U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- measured
- resistance value
- constant current
- point
- 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 description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000005465 channeling Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例を示す図、第２図
は従来の測定回路を示す図である。
１は被測定抵抗体、２は第１の導線、４は第２
の導線、Ｐ１は第１の測定点、Ｐ２は第２の測定
点、６は演算増幅器、１５は定電流源である。な
お、各図中同一符号は同一又は相当部分を示す。
FIG. 1 is a diagram showing an embodiment of this invention, and FIG. 2 is a diagram showing a conventional measuring circuit. 1 is the resistor to be measured, 2 is the first conductor, 4 is the second
P1 is the first measurement point, P2 is the second measurement point, 6 is an operational amplifier, and 15 is a constant current source. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
め、その一端が被測定抵抗体の第１端に接続され
た第１の導線、 被測定抵抗体からの電流を前記基準点に流し込
むため、その一端が被測定抵抗体の第２端に接続
され、第１の導線と実質的に等しい抵抗値をもつ
第２の導線、 第１の導線より定電流側に設けられた第１の測
定点、 被測定抵抗体の第１端に設けられた第２の測定
点 第１・第２の導線ならびに被測定抵抗体の抵抗
値より十分高い入力インピーダンスをもち、基準
点と第１の測定点との間の第１の電圧Ｖ１および
基準点と第２の測定点との間の第２の電圧Ｖ２に
基づいて２Ｖ２―Ｖ１の演算を行なう演算回路、 を備えたことを特徴とする抵抗値変化測定回路。 (2) 定電流源の電流は基準抵抗を介して被測定
抵抗体に与えられるものであることを特徴とする
特許請求の範囲第１項記載の抵抗値変化測定回路
。[Claims for Utility Model Registration] (1) A constant current source connected to a reference point, a resistor to be measured, and one end of the constant current source connected to the resistor to be measured. a first conductive wire connected at one end to a second end of the resistor to be measured and substantially equal to the first conductor for channeling the current from the resistor to the reference point; A second conducting wire having a resistance value, a first measuring point provided on the constant current side of the first conducting wire, and a second measuring point provided at the first end of the resistor to be measured. It has an input impedance sufficiently higher than the resistance value of the conductor and the resistor to be measured, and has a first voltage V 1 between the reference point and the first measurement point and a second voltage V 1 between the reference point and the second measurement point. A resistance value change measuring circuit comprising: an arithmetic circuit that calculates 2V 2 -V 1 based on a voltage V 2 of . (2) The resistance value change measuring circuit according to claim 1, wherein the current of the constant current source is applied to the resistor to be measured via a reference resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6436185U JPS61180399U (en) | 1985-04-29 | 1985-04-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6436185U JPS61180399U (en) | 1985-04-29 | 1985-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61180399U true JPS61180399U (en) | 1986-11-11 |
Family
ID=30595374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6436185U Pending JPS61180399U (en) | 1985-04-29 | 1985-04-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61180399U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009053033A (en) * | 2007-08-27 | 2009-03-12 | Fujitsu Ltd | High-sensitive apparatus for measuring resistance of solder bump and monitoring method |
| JP2012242294A (en) * | 2011-05-20 | 2012-12-10 | Yokogawa Electric Corp | Three-wire system resistance measurement instrument |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440849U (en) * | 1977-08-26 | 1979-03-17 |
-
1985
- 1985-04-29 JP JP6436185U patent/JPS61180399U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440849U (en) * | 1977-08-26 | 1979-03-17 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009053033A (en) * | 2007-08-27 | 2009-03-12 | Fujitsu Ltd | High-sensitive apparatus for measuring resistance of solder bump and monitoring method |
| JP2012242294A (en) * | 2011-05-20 | 2012-12-10 | Yokogawa Electric Corp | Three-wire system resistance measurement instrument |
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