Over-voltage and under voltage protection circuit

Details Over-voltage and under voltage protection circuit Over-voltage and under voltage protection circuit

2008-06-23

2010-06-01

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

Reexamination Certificate

active

07729097

ABSTRACT:
There is provided an apparatus for protection against over voltages and/or under voltages. The apparatus includes a pass transistor through which an input voltage is applied, the input voltage varying between a low voltage and a high voltage, and means for selectively varying the gate voltage of the pass transistor when the input voltage is transitioning from the low voltage to the high voltage or from the high voltage to the low voltage. The pass transistor may include an NMOS or a PMOS transistor.

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patent: 6163179 (2000-12-01), Huang et al.
patent: 6798629 (2004-09-01), Proebsting
patent: 37 29 926 (1989-03-01), None
Author Unknown, “Fast Level Converter Circuit,” IBM Technical Disclosure Bulletin, May 1987, 2 pages, vol. 29, No. 12, IBM Corporation, US.

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