Fault-tolerant self-indicating surge protection system for aircraft
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United States of America Patent
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Mar 1, 2016
Grant Date -
Jan 22, 2015
app pub date -
Jul 21, 2013
filing date -
Jul 21, 2013
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Abstract
A fault-tolerant self-indicating surge protector system and methods are presented. An unwanted surge of electrical energy induced by a lightning strike is directed away from a sensitive electrical or electronic component, and the unwanted surge of electrical energy is directed through series connected pairs of varistors. A voltage signal is extracted from a center tap point between the series connected pairs of the varistors, and the voltage signal is monitored for a health of the varistors. A high impedance in a varistor among the varistors is provided for a low voltage across the varistor, and a low impedance in the varistor is provided and the unwanted surge of electrical energy is diverted through the varistor in response to a high voltage across the varistor.
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