Frequency-dependent overvoltage protective device for high voltage appliances
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United States of America Patent
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-
Jul 24, 1990
Grant Date -
N/A
app pub date -
May 20, 1988
filing date -
May 22, 1987
priority date (Note) -
Expired
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Abstract
An asymmetrical overvoltage protection circuit includes a series connection of varistors with a capacitance in parallel with only one of the varistors. The asymmetry may also involve a parallel connection of an inductance with the other of the varistors.
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