Electrical resistance measurement

Details Electrical resistance measurement Electrical resistance measurement

1980-12-16

1983-08-09

Krawczewicz, Stanley T.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 65R, 324 65CR, G01R 2702

Patent

active

043981453

ABSTRACT:
Monitoring the change of resistance of a test element by passing a current through the element in series with a standard element, comparing the voltage across the test element with a standard voltage to produce a signal dependent on the difference between the voltages, feeding said signal to a current modifier so as to vary the current to maintain the voltage across the test element constant, and monitoring the change in voltage across the standard element.

REFERENCES:
patent: 3056082 (1962-09-01), Redding
patent: 3067386 (1962-12-01), Freedman
patent: 4038975 (1977-08-01), Vrana et al.
patent: 4109196 (1978-08-01), Carmody
patent: 4322679 (1982-03-01), Moore et al.
H. Helke, "Gleichstrommessbrucken, Gleichspannungskompensatoren und ihre Normale" (1974), pp. 93, 118-119.

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