Electrostatic voltmeter probe positioned on the outside of a hou

Details Electrostatic voltmeter probe positioned on the outside of a hou Electrostatic voltmeter probe positioned on the outside of a hou

1977-02-18

1979-04-03

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 528

Patent

active

041479815

ABSTRACT:
A probe or sensor for an electrostatic voltmeter including a voltage sensitive electrode on the outer surface of a housing wall portion which is vibrated or oscillated by a piezoelectric transducer within the housing and mechanically coupled to the wall portion. The sensitive electrode is moved in a direction generally perpendicular to the plane of the electrode operative surface, the latter being disposed toward an external potential being measured. The capacitive coupling between the electrode operative surface and the external potential is varied at the rate of vibration of the electrode whereby an alternating voltage is induced on the electrode having an amplitude proportional to the amplitude of the external electrical potential being measured. Electrically conducting surfaces in the probe are driven to the same potential as the signal induced on the sensitive electrode.

REFERENCES:
patent: 3317983 (1967-05-01), De Wit et al.
patent: 3611127 (1971-10-01), Vosteen
patent: 3729675 (1973-04-01), Vosteen
patent: 3774108 (1973-11-01), Ogilvie
patent: 3851247 (1974-11-01), Vosteen et al.
patent: 3852667 (1974-12-01), Williams et al.
patent: 3997839 (1976-12-01), Dreyfus et al.
patent: 4072896 (1978-02-01), Bijlmer

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