Power supply control apparatus and electric device

Details Power supply control apparatus and electric device Power supply control apparatus and electric device

2005-12-20

2005-12-20

Royer, William J. (Department: 2852)

Electrophotography

Machine operation

Having power supply

Reexamination Certificate

active

06978098

ABSTRACT:
In the image formation apparatus, an active filter converts an AC power supply supplied from an AC power supply to a DC voltage, and first and second DC-DC converters convert the DC voltage converted by the active filter to voltages at predetermined levels and respectively supplies the voltages to an image forming engine and an engine control unit. A power supply control unit stops the operation of the first DC-DC converter in order to allow the second DC-DC converter to continue supply of the voltage to the engine control unit when disconnection of the AC power supply is detected.

REFERENCES:
patent: 6701103 (2004-03-01), Nakaya

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