JPS5552961A - Device for measuring infinitesimal change of resistance and capacitance of ultralow impedance - Google Patents
Device for measuring infinitesimal change of resistance and capacitance of ultralow impedanceInfo
- Publication number
- JPS5552961A JPS5552961A JP12647178A JP12647178A JPS5552961A JP S5552961 A JPS5552961 A JP S5552961A JP 12647178 A JP12647178 A JP 12647178A JP 12647178 A JP12647178 A JP 12647178A JP S5552961 A JPS5552961 A JP S5552961A
- Authority
- JP
- Japan
- Prior art keywords
- capacitance
- circuit
- resistance
- capacitances
- specimens
- 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 enable measurement of infinitesimal changes of resistance and capacitance of an ultralow impedance by electrostatically coupling the output of a high frequency power supply to a parallel turning circuits and applying the outputs of the tuning circuits through an inductance and a variable capacitance to measuring and compensating specimens.
CONSTITUTION: Parallel tuning circuits L1-C1V-C1-C2, L1'-C1V'-C1'-C2' having equal constants are electrostatically coupled through infinitesimal capacitances CO1, CO1' to the high voltage side terminal of the output tank circuit LO-RO-CO of a high frequency power supply OSC. Measuring specimens RX, CX and compensating specimens RX', CX' are connected through series circuit of an inductance L1 and a variable capacitance in parallel with capacitances C2, C2' in a series connecting circuit of capacitances C1, C2, C1', C2' forming part of the tuning circuit. When the values of the circuit elements are so set as to satisfy the special condition, the loss indicator VgR and the indicator of a phase discriminator VgC are maximized with respect to the infinitesimal changes ΔRX/RX and ΔCX/CX of the resistance and capacitance to thereby obtain the values.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12647178A JPS5552961A (en) | 1978-10-13 | 1978-10-13 | Device for measuring infinitesimal change of resistance and capacitance of ultralow impedance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12647178A JPS5552961A (en) | 1978-10-13 | 1978-10-13 | Device for measuring infinitesimal change of resistance and capacitance of ultralow impedance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5552961A true JPS5552961A (en) | 1980-04-17 |
Family
ID=14936032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12647178A Pending JPS5552961A (en) | 1978-10-13 | 1978-10-13 | Device for measuring infinitesimal change of resistance and capacitance of ultralow impedance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5552961A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717369A (en) * | 2016-02-16 | 2016-06-29 | 常州同惠电子股份有限公司 | Method for using capacitance meter to measure cascade equivalent inductance of capacitance |
-
1978
- 1978-10-13 JP JP12647178A patent/JPS5552961A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717369A (en) * | 2016-02-16 | 2016-06-29 | 常州同惠电子股份有限公司 | Method for using capacitance meter to measure cascade equivalent inductance of capacitance |
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