Power supply circuit protecting method and apparatus for the...

Details Power supply circuit protecting method and apparatus for the... Power supply circuit protecting method and apparatus for the...

2005-09-30

2010-02-23

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S079000, C361S093500, C361S093600, C361S093700

Reexamination Certificate

active

07667941

ABSTRACT:
This invention relates to a power supply circuit protecting method and a power supply circuit protecting apparatus. The apparatus is provided with a power supply circuit for converting a voltage from a three-phase alternating current inputting power supply into a predetermined voltage, and an output operation circuit for performing a predetermined operation by adopting an output voltage from the power supply circuit as input. In the apparatus, based on a current value on the input side or the output side of the power supply circuit, abnormality of the supply voltage is judged, and when there is an abnormality, the output operation circuit is controlled.

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