Energy lockout in response to a planar catastrophic fault

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United States of America Patent

PATENT NO 9367110
APP PUB NO 20150333511A1
SERIAL NO

14278520

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Abstract

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A computer planar includes an enable signal line for providing an enable signal to an external power supply, wherein the external power supply will not turn on unless the enable signal is active high. During normal operation, an auxiliary power source maintains an active high enable signal on the enable signal line, which includes a fuse. However, a fault protection circuit coupled to the enable signal line can pull down the enable signal line in response to a fault, such that the fuse is permanently opened. Once the fuse is open, the external power supply cannot be enabled and further damage to the computer planar is prevented.

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Patent Owner(s)

Patent OwnerAddress
LENOVO INTERNATIONAL LIMITED979 KING'S ROAD 23/F LINCOLN HOUSE TAIKOO PLACE QUARRY BAY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barnette, Jamaica L Durham, US 20 78
Clemo, Raymond M Raleigh, US 13 146
Evans, Douglas I Cary, US 6 7
Totten, Brian C Durham, US 26 24

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