Bridgeless dielectric measurement

Details Bridgeless dielectric measurement Bridgeless dielectric measurement

1980-10-20

1982-08-17

Krawczewicz, Stanley T.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

G01R 2726

Patent

active

043452043

ABSTRACT:
An apparatus for measurement of dielectric properties at very low frequencies without the use of bridge circuits. A high quality capacitor of high capacitance value is placed in series with the sample to be tested and the voltage displayed across the capacitor is read by use of a very high input impedance amplifier. With the proper selection of component values, taking into account stray capacitances and leakage resistance, the result is an extremely stable measurement circuit for frequencies below 10 Hertz with capability of being easily automated for unattended operation.

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patent: 4096758 (1978-06-01), Moore

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