Method of and arrangement for accurately measuring low capacitan

Details Method of and arrangement for accurately measuring low capacitan Method of and arrangement for accurately measuring low capacitan

1987-02-13

1989-07-18

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Conductor identification or location

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324 57R, 73 1R, G01R 2702

Patent

active

048496863

ABSTRACT:
A third reference capacitor cooperates with first and second reference capacitors to minimize measurement errors in a measurement circuit of the type in which reference and measurement capacitors are connected, one at a time, to an oscillator of the measurement circuit to generate an output frequency proportional to the capacitance of the capacitor being measured. The measurement errors introduced by different temperature and loading conditions during calibration and measurement modes of the measurement circuit are minimized.

REFERENCES:
patent: 2753547 (1956-07-01), Donath
patent: 3268665 (1966-08-01), Miller
Gruenberg: "Handbook of Telemetry & Remote Control"-McGraw Hill 1973-Chapters 6 and 12.
Borden: "Telemetering Systems"-Reinhold-pp. 256-258, published co. 1960.

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