Power supply circuit

Details Power supply circuit Power supply circuit

2006-08-23

2008-09-02

Sherry, Michael J (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Selective or optional sources

C307S085000

Reexamination Certificate

active

07420296

ABSTRACT:
A control circuit for a power supply circuit that selects an appropriate power source to continuously supply power. The control circuit includes a power synthesizing circuit for generating synthesized power by synthesizing a first power supplied from a regulator and a second power supplied from a regulator, or battery power and bus power, so that each circuit of the control circuit is operated by the synthesized power. Operation of the control circuit is enabled even if the supply of one power is stopped. The first switch device and the second switch device are controlled to select the appropriate power source in accordance with the currently supplied power so that power is continuously supplied.

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patent: 2004/0015732 (2004-01-01), El-Kik et al.
patent: 2006/0273767 (2006-12-01), Fujii
patent: 2007/0018502 (2007-01-01), Bazinet
patent: 61-258628 (1986-11-01), None
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patent: 2004234596 (2004-08-01), None
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