Electrical continuimeter

Details Electrical continuimeter Electrical continuimeter

1983-10-07

1985-10-08

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 62, 324 65P, 324 61P, G01R 2702, G01R 2726

Patent

active

045463107

ABSTRACT:
Electrical continuimeter device for checking the electrical continuity of a conducting layer covering a structure having conducting and non-conducting parts, said conducting layer being covered by an insulator layer. The device comprises a pick-up with an inner and an outer coaxial electrodes to be put on the insulator layer. A supply alternating voltage is applied between the inner electrode and the ground terminal of the structure developing a first voltage across a load resistor and a second voltage between the outer electrode and the ground terminal is measured. Components of the second voltage respectively cophasal and in phase quadrature with the first voltage are generated and these components are divided by the first voltage, thus providing the resistive and reactive components of the ground impedance.

REFERENCES:
patent: 4075557 (1978-02-01), Jurca
patent: 4218650 (1980-08-01), Matzen
patent: 4335350 (1982-06-01), Chen
Batt: "Surface Resistivity and Power Measurement"--Colloquium on the Measment of Power at Higher Microwave Freqs.--London, UK., Jan. 1979.
Phillips: "Versatile Four Probe AC Conductivity Measurement System" Rev. Sci. Instruments--Feb. 1979, pp. 263-265.

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