Power supply device and image forming apparatus
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United States of America Patent
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Feb 8, 2011
Grant Date -
Feb 19, 2009
app pub date -
Aug 7, 2008
filing date -
Aug 7, 2007
priority date (Note) -
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Abstract
A charging unit charges a capacitor that is configured to be charged and discharged to drive a load. A switching unit switches on and off between the capacitor and the charging unit. A delay control unit delays an output of a switching control signal for controlling the switching unit until an output voltage of the charging unit exceeds a voltage of the capacitor, and outputs a delayed switching control signal. An output unit receives the delayed switching control signal from the delay control unit, and outputs the delayed switching control signal to the switching unit so that the charging unit charges the capacitor.
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