Power down circuit

Details Power down circuit Power down circuit

2005-02-17

2009-11-17

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S535000

Reexamination Certificate

active

07619463

ABSTRACT:
A power down circuit that provides an on-state electrical current to a load circuit that does not depend significantly on power control signal logic levels and that provides a widened off-state control signal voltage range. A power down circuit according to the present teachings includes a switching transistor for providing an electrical current to a load circuit in an on-state and for interrupting the electrical current in an off-state and that includes a circuit for operating the switching transistor in a triode region during the on-state.

REFERENCES:
patent: 4384220 (1983-05-01), Segawa et al.
patent: 4639661 (1987-01-01), Williams et al.
patent: 5619164 (1997-04-01), Tomishima
patent: 6225855 (2001-05-01), Taguchi
patent: 2002/0190779 (2002-12-01), Aiba et al.
patent: 2005/0083101 (2005-04-01), Aoike
patent: 2005/0134334 (2005-06-01), Mikyska

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