Power supply system and image forming apparatus having the power supply system
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United States of America Patent
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Feb 24, 2015
Issued Date -
N/A
app pub date -
Mar 25, 2014
filing date -
Mar 27, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A power supply system includes: capacitors connected to an alternating current power supply; a rectification circuit connected to the capacitors and rectifying an alternating current voltage applied to the capacitors; a signal generation circuit connected to an output line of the rectification circuit and configured to generate a detection signal corresponding to a zero cross point of an alternating current output; an electricity storage unit connected to the output line of the rectification circuit; a backflow regulation element provided on the output line of the rectification circuit and configured to regulate backflow of current; a current limit element configured to limit current flowing from the output line of the rectification circuit towards the electricity storage unit, and a control unit that is connected to the output line of the rectification circuit, and is configured to detect a zero cross point of the alternating current output.
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