Power supply controlling device of an electronic equipment

Details Power supply controlling device of an electronic equipment Power supply controlling device of an electronic equipment

2006-02-21

2006-02-21

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C399S088000, C710S313000, C713S320000, C713S324000

Reexamination Certificate

active

07002814

ABSTRACT:
A system connecting a printer and a host computer includes a signal processing unit, a printing unit, a DC/DC converter converting a power supply voltage into a lower voltage required by the signal processing unit and outputting the converted voltage to the signal processing unit, an input unit receiving a printing command, and a power supply controlling device. The power supply controlling device includes a first switching unit, a pulse width modulating unit, a power supply switch providing a power on/off signal from a user, and a power supply controlling unit outputting a control signal to the pulse width modulating unit to control the first switching unit to perform an on/off operation corresponding to the power on/off signal from the user.

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