Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2007-08-27
2010-02-09
Nguyen, Danny (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
C361S111000
Reexamination Certificate
active
07660090
ABSTRACT:
A circuit for voltage transient protection is provided. The circuit includes a voltage divider, a low-voltage reset circuit, and an input transistor. The input transistor receives an input voltage at the source of the input transistor, and provides a protected input voltage at the drain of the input transistor. The voltage divider provides a threshold voltage from the input voltage. The low-voltage reset circuit receives the threshold voltage. The low-voltage reset circuit causes the gate and source of the input transistor to short together when the low-voltage reset circuit is not in a reset state.
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Darby & Darby P.C.
Gaffney Matthew M.
National Semiconductor Corporation
Nguyen Danny
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