Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means
Reexamination Certificate
2005-02-01
2005-02-01
Jackson, Stephen W. (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific quantity comparison means
C361S018000, C361S090000, C361S100000
Reexamination Certificate
active
06850396
ABSTRACT:
Aspects of a fail safe circuit for protecting power supply operation from a failure are described. The fail safe circuit shutdowns at least one power supply when a preset threshold is exceeded and resets to resume normal operation following a temporary fault condition. The fail safe circuit includes a switch coupled to a voltage signal line of a branch of a power supply system, a current sense resistor coupled to the switch for detecting a failure condition in the branch, and a latch coupled to the current sense resistor and the switch for turning the switch off during the failure condition.
REFERENCES:
patent: 5774321 (1998-06-01), Kim et al.
patent: 6241530 (2001-06-01), Eddy et al.
Clemo Raymond Mathew
Hemena William
Lindfors Eino Alfred
Malik Randhir Singh
Jackson Stephen W.
Sawyer Law Group
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