FORWARD-FLYBACK POWER SUPPLY USING AN INDUCTOR IN THE TRANSFORMER PRIMARY AND METHOD OF USING SAME
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United States of America Patent
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Issued Date -
May 10, 2012
app pub date -
Nov 4, 2010
filing date -
Nov 4, 2010
priority date (Note) -
Abandoned
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Abstract
A power supply (300) includes a rectification means (303) for providing a voltage from an AC mains input (301). An inverter (307) is used for supplying a switched AC voltage at high frequency from the rectified voltage to a transformer (311) for modifying the amplitude and/or providing galvanic isolation of the switched AC voltage. Output rectification (313) is used to convert the switched AC voltage at the secondary of the transformer back to a rectified voltage. An inductor (309) is used in series with the primary of the transformer (311) for reducing the peak and ripple current in both the primary and secondary of the transformer while minimizing or eliminating the need for an inductive component in the output filter of the supply.
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