Power supply system having standby power

Details Power supply system having standby power Power supply system having standby power

2006-07-21

2009-12-29

Butler, Dennis M (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Having power source monitoring

C713S300000

Reexamination Certificate

active

07640447

ABSTRACT:
A power supply system for selectively supplying a main power and a standby power to a computer is provided. The power supply system comprises a transistor including a first terminal, a second terminal and a third terminal. The first terminal being coupled to a motherboard power source, the second terminal being coupled to a standby power source, and a voltage output port electrically connected to the third terminal of the transistor. The motherboard power source comprises a first Direct Current (DC) battery, a first resistor and a diode, the first resistor is in series between an anode of the first DC battery and an anode of the diode, a cathode of the first DC battery is grounded, and a cathode of the diode is electrically connected to the voltage output port.

REFERENCES:
patent: 4427899 (1984-01-01), Bruns
patent: 4704542 (1987-11-01), Hwang
patent: 5204610 (1993-04-01), Pierson et al.
patent: 5517153 (1996-05-01), Yin et al.
patent: 6310497 (2001-10-01), Strauss
patent: 2004/0160330 (2004-08-01), McClure et al.
patent: 2596670 (2003-12-01), None

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