Circuit for measuring electrical properties

Details Circuit for measuring electrical properties Circuit for measuring electrical properties

1981-09-28

1984-05-15

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 2700

Patent

active

044490933

ABSTRACT:
A circuit for measuring electrical properties such as the resistance, capacitance and inductance includes two bridge branches each having at least two serially-connected components which can comprise resistors, capacitors and inductors or combinations thereof. One of the components is variable with respect to its resistance by means of a quantity which is under measurement. The bridge branches are connected to different voltage outputs of a common alternating current supply. The diagonal points between serially-connected components in each of the bridge branches serve as measuring points for a measurable signal. Each measuring point may be connected by a line having a rectifier followed by a capacitor forming an electronic store such that at the output of the stores there is a direct current potential forming the measurable signal.

REFERENCES:
Pruna et al.: "Vectorial Impedance Meter"-Metrologia Aplicata, vol. XXVI, NR 3; 1979, pp. 123-128.
Oliver et al.: "Electronics Measurements and Instrumentation", McGraw-Hill-1972-p. 278.

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