Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2005-03-03
2008-11-11
Sherry, Michael J (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
C361S090000, C361S093800, C361S103000, C361S115000
Reexamination Certificate
active
07450359
ABSTRACT:
A system and a method are disclosed for providing a temperature compensated under-voltage-lockout circuit that has a trip point voltage that is not sensitive to temperature variation. The under-voltage-lockout circuit of the invention comprises (1) an inverter circuit that is coupled to a supply voltage and (2) a temperature compensation circuit that is coupled to the supply voltage and to the inverter circuit. The temperature compensation circuit and the inverter circuit temperature compensate a trip point voltage of the inverter circuit by driving an input of the inverter circuit with a voltage that has a same temperature coefficient as the trip point voltage of the inverter circuit.
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Mei Tawen
Yang Thomas
National Semiconductor Corporation
Sherry Michael J
Willoughby Terrence R
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