Method of measuring low impedance for obtaining unknown capacita

Details Method of measuring low impedance for obtaining unknown capacita Method of measuring low impedance for obtaining unknown capacita

1979-02-02

1980-12-09

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 57Q, 324 60C, 324 61QL, 324 62, G01R 2700, G01R 2702, G01R 2726

Patent

active

042387264

ABSTRACT:
A method for accurately measuring the capacitances and loss resistances of specimens of an unknown impedance (hereinafter referred to as the "specimen"). The measured values of the capacitances are unaffected by the resistances of the specimens when the equivalent parallel resistances of the specimens vary from infinity to 30 ohms. Several meters' length of HF coaxial cable can be used in place of a lead-wire connecting the measuring part and electrodes.

REFERENCES:
Ichijo et al.; "A New Method . . . "; IEEE Trans. on Instruments and Measurement; vol. IM-19; No. 1; Feb. 1970; pp. 73-77.
Ichijo et al.; "A Differential Capacitor Circuit . . . "; IEEE Trans. on Instruments and Measurement; vol. IM-22; No. 4; Dec. 1973; pp. 315-319.

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