Power supply apparatus, power supply apparatus control method

Details Power supply apparatus, power supply apparatus control method Power supply apparatus, power supply apparatus control method

2011-07-05

2011-07-05

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S093100, C361S093900

Reexamination Certificate

active

07974059

ABSTRACT:
A power supply apparatus comprises a current limiting unit connected in series between a power source and a power supply circuit that limits output current of the power source; a first switch connected in series with the current limiting unit; a second switch connected in parallel with the current limiting unit; a resistor connected in series between the power source and the current limiting unit; an abnormal current detection unit, connected in parallel with the resistor, that detects the current flowing through the resistor and determines whether or not the detected current is abnormal; and a control unit that turns on the first switch if the abnormal current detection unit detects a current, and, thereafter, turns the second switch on if the detected current is not abnormal, and turns the first switch off if the detected current is abnormal.

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patent: 7408755 (2008-08-01), Ye et al.
patent: 7821756 (2010-10-01), Chishima

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