Surge-immune DC input supply apparatus

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United States of America Patent

PATENT NO 11973341
APP PUB NO 20230048562A1
SERIAL NO

17398458

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Abstract

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A DC power supply may use an input supply surge protection circuit that may be robust against positive and negative power surges. DC power may be provided through a first unidirectional circuit component such as a diode or selectively controlled MOSFET coupled in parallel with a transient voltage suppressor or Zener diode. The first unidirectional circuit component may have a first voltage rating and the transient voltage suppressor or Zener diode may have a second voltage rating lower than the first voltage rating. This may allow current to flow backward over the transient voltage suppressor or Zener diode to protect the first unidirectional circuit component from exposure to voltage beyond the first voltage rating in a power surge.

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Patent Owner(s)

Patent OwnerAddress
SCHWEITZER ENGINEERING LABORATORIES INC2350 NE HOPKINS COURT PULLMAN WA 99163

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
El-Mansouri, Adam S Boise, US 16 149
Randall, Anthony L Pullman, US 6 189
Wold, Valeriy F Pullman, US 1 0

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