JPS5669562A - Impedance measuring device - Google Patents
Impedance measuring deviceInfo
- Publication number
- JPS5669562A JPS5669562A JP14538079A JP14538079A JPS5669562A JP S5669562 A JPS5669562 A JP S5669562A JP 14538079 A JP14538079 A JP 14538079A JP 14538079 A JP14538079 A JP 14538079A JP S5669562 A JPS5669562 A JP S5669562A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- measured
- impedance
- signal
- output
- 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 measure the impedance without being influenced by the capacity of a circuit, inductivity by detecting current flowing in a circuit to be measured by a pick up coil wound on an toroidal core.
CONSTITUTION: The current flowing through a circuit 2 to be measured through a pick up coil wound on an toroidal core 8 by a differential amplifier 16, and converted into a square wave by a converter 17. Then, this signal and the signal obtained by converting the output signal of an oscillator 11 into a square wave by a converter 18 are compared in phase and rectified 20, and the phase difference between the current flowing through the circuit to be measured and the output voltage of the oscillator 11, that is, the phase angle of impedance is displayed 21. Also, the direct current signal produced by rectifying 22 the output of the differential amplifier 16 is divided 24 by the direct current signal rectified 23 by the output of the oscillator 11, then the result is displayed 25 as the absolute value of the impedance of the circuit to be measured. Thus, irrespective of the capacity of the impedance of the circuit to be measured and inductivity, a stable measurement is done.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14538079A JPS5669562A (en) | 1979-11-12 | 1979-11-12 | Impedance measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14538079A JPS5669562A (en) | 1979-11-12 | 1979-11-12 | Impedance measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5669562A true JPS5669562A (en) | 1981-06-10 |
Family
ID=15383895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14538079A Pending JPS5669562A (en) | 1979-11-12 | 1979-11-12 | Impedance measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5669562A (en) |
-
1979
- 1979-11-12 JP JP14538079A patent/JPS5669562A/en active Pending
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