JPS562571A - Measuring circuit for impedance of electric parts - Google Patents
Measuring circuit for impedance of electric partsInfo
- Publication number
- JPS562571A JPS562571A JP7796079A JP7796079A JPS562571A JP S562571 A JPS562571 A JP S562571A JP 7796079 A JP7796079 A JP 7796079A JP 7796079 A JP7796079 A JP 7796079A JP S562571 A JPS562571 A JP S562571A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- current
- circuit
- impedance
- fluctuations
- 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
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
PURPOSE: To evade influences of fluctuations of a measurement electric power source, floating capacity, etc., by using shielded wires, etc., while providing a voltage detecting circuit and current variation correcting circuit.
CONSTITUTION: Voltage Vcx, applied across capacitor Cx, is detected by operational amplifiers OP1 snd OP2 in voltage detecting circuit 12 and converted by full-wave rectifying circuit REC1 into DC voltage Vz, which is applied to input terminal Z of divider OP5, but voltage Vcx is in proportion to Vz. Current I flowing through capacitor Cx is input from terminal D to operation amplifier OP4 in current variation correcting circuit 13 through shielded measurement lead line F and, after converted into a voltage, applied to input terminal X of OP5 as DC voltage Vx obtained by full-wave rectifying circuit REC2, but current I is in proportional to voltage Vx. Therefore the output of the divider performing Vx÷Vx is in proportion to impedance Z and even if current I fluctuates due to the fluctuations of the electric power source, the influence of it can be evaded.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7796079A JPS562571A (en) | 1979-06-20 | 1979-06-20 | Measuring circuit for impedance of electric parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7796079A JPS562571A (en) | 1979-06-20 | 1979-06-20 | Measuring circuit for impedance of electric parts |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS562571A true JPS562571A (en) | 1981-01-12 |
Family
ID=13648539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7796079A Pending JPS562571A (en) | 1979-06-20 | 1979-06-20 | Measuring circuit for impedance of electric parts |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS562571A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030083401A (en) * | 2002-04-22 | 2003-10-30 | 채수익 | Energy consumption in digital VSLI circuits cycle of measurement apparatus and methode using capacitor charging |
-
1979
- 1979-06-20 JP JP7796079A patent/JPS562571A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030083401A (en) * | 2002-04-22 | 2003-10-30 | 채수익 | Energy consumption in digital VSLI circuits cycle of measurement apparatus and methode using capacitor charging |
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