Electric power supply device and image forming apparatus including such an electric power supply device
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United States of America Patent
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Dec 19, 2017
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app pub date -
Jan 5, 2015
filing date -
Jan 15, 2014
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Abstract
An electric power supply device includes a first electric power supply to employ electric power supplied from outside as an input source; a second electric power supply to employ a rechargeable battery as an input source; a load electric power supply part to supply electric power to a constant voltage load; a heater electric power supply part to supply electric power to a heater; a DC internal bus to connect the first electric power supply, the second electric power supply, the load electric power supply part, and the heater electric power supply part; and a controller to control an output of the second electric power supply. The controller controls electric power supply from the second electric power supply to the DC internal bus based on a voltage of the DC internal bus.
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