Non-contact high-voltage electrometer architecture with...

Electricity: measuring and testing – Testing potential in specific environment – Voltage probe

Reexamination Certificate

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C324S458000, C324S658000

Reexamination Certificate

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07098644

ABSTRACT:
A voltmeter measures an unknown voltage on a target surface using multiple sampling stages or a parallel reference capacitor. A movable shutter may alternately be closed during resetting of a voltage measuring circuit and opened so as to expose a detector plate to the target surface during two sampling stages. Alternatively, the shutter may be used to modulate exposure of a detector plate to the target surface.

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