High speed electrostatic voltmeter

Details High speed electrostatic voltmeter High speed electrostatic voltmeter

1977-11-03

1980-05-27

Rolinec, Rudolph V.

Electricity: measuring and testing

Electrostatic field

Using modulation-type electrometer

324 72, G01R 528, G01R 2912

Patent

active

042052670

ABSTRACT:
A large bandwidth non-contacting voltage follower for detecting and following both static or d.c. and dynamic or a.c. data of an electrical field or potential being measured. A probe or sensor includes a pair of voltage sensitive electrodes which are vibrated or oscillated within a housing to vary the capacitive coupling between the electrodes and external field or potential in an inverse manner to induce signals on the electrodes having static and dynamic data from the field or potential. The signals are processed and applied to the input of a voltage follower amplifier, the output of which is coupled to the probe housing as a reference, so that the follower output follows the static and dynamic characteristics of the external field or potential.

REFERENCES:
patent: 2721908 (1955-10-01), Moe
patent: 4054835 (1977-10-01), Los et al.

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