Power supply device and method utilizable in electronic apparatus
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United States of America Patent
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Jun 24, 2003
Grant Date -
N/A
app pub date -
Sep 8, 1999
filing date -
Sep 9, 1998
priority date (Note) -
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Abstract
A power supply device and power supply method that may be used with an electronic apparatus, such as a facsimile machine. In the device and method, a communication device is placed in a sleep mode while a copy process is conducted. During the sleep mode, power is not supplied to the circuits of the communication device that are necessary for transmission with an external transmission line. Thus, a load current loaded to a DC voltage of +5V can be efficiently reduced. As a result, the energy quantity consumed in a regulator of the power supply device may be reduced. Accordingly, heating of the regulator can be restrained and useless energy consumption may be prevented.
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