Surface potential electrometer

Details Surface potential electrometer Surface potential electrometer

1994-04-14

1996-07-23

Karlsen, Ernest F.

Electricity: measuring and testing

Electrostatic field

Using modulation-type electrometer

324109, G01R 2912

Patent

active

055393195

ABSTRACT:
An electrometer having small width size and stable characteristics includes a chopper portion for chopping electric line of force emitted from an object to be measured. The chopper portion is constituted with a tuning fork type bending vibrator including a first metal plate as a detection electrode portion for receiving electric line of force, a second metal plate and an insulating plate for connecting the first and second metal plates in a plane. The bending vibrator is arranged such that its vibrating direction is coincident with direction of electric line of force, so that the width size of the electrometer can be reduced and the characteristics thereof can be stabilized.

REFERENCES:
patent: 4367948 (1983-01-01), Suzuki
patent: 4625176 (1986-11-01), Champion
patent: 5212451 (1993-05-01), Werner, Jr.
patent: 5243292 (1993-09-01), Bouton

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