Ripple cancellation converter with high power factor
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United States of America Patent
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Aug 16, 2016
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app pub date -
Oct 17, 2012
filing date -
Oct 17, 2011
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Abstract
Provided are circuits and methods for use with a power supply that provides a main output including a main DC voltage having a first AC voltage ripple, or a main DC current having a first AC current ripple. A ripple cancellation converter provides a second AC voltage ripple connected in series with the main output, such that the first AC voltage ripple is substantially cancelled; or a second AC current ripple connected in parallel with the main output, such that the first AC current ripple is substantially cancelled. As a result, substantially ripple-free DC output power is provided.
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