FLYBACK CONVERTER UTILIZING BOOST INDUCTOR BETWEEN AC SOURCE AND BRIDGE RECTIFIER
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United States of America Patent
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Issued Date -
Jun 23, 2011
app pub date -
Dec 23, 2009
filing date -
Dec 23, 2009
priority date (Note) -
Abandoned
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Abstract
A flyback converter utilizes a boost inductor coupled between a source of AC power and a bridge rectifier to provide power factor correction. A primary winding of the flyback transformer is coupled in series with a storage capacitor across the output of the bridge rectifier. A circuit, which includes a switching transistor, is also coupled across the output of the bridge rectifier to provide a low resistance path when the switch is closed. The cores of the boost inductor and the transformer are loaded with energy when the switch is closed. When the switch opens, the energy stored in the magnetic cores is transferred to the output via the transformer secondary winding and rectification circuitry.
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