Power supply device, image forming device, and electronic appliance
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United States of America Patent
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Jun 20, 2017
Grant Date -
Mar 3, 2016
app pub date -
Apr 25, 2014
filing date -
Apr 25, 2013
priority date (Note) -
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Abstract
This invention is concerning a power supply device that includes a cut-off unit configured to cut off voltage to be applied to a primary winding of a transformer and a coil added in series with the primary winding of the transformer, a first circuit configured to cause, in a case where the voltage to be applied is cut off by the cut-off unit, current to flow in such a way that energy accumulated in the transformer is led to a capacitor, and a second circuit configured to clamp, in a case where the voltage to be applied is cut off by the cut-off unit, voltage of the primary winding and the coil.
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