Adaptive power factor correction for a lighting load circuit
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United States of America Patent
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May 19, 2015
Grant Date -
Oct 6, 2011
app pub date -
Nov 13, 2009
filing date -
Nov 14, 2008
priority date (Note) -
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Abstract
The invention relates to a method for operation of an actively clocked PFC circuit with a directly or indirectly connected load circuit at the output of the PFC circuit, wherein the load circuit has a lighting means, in particular one or more LEDs, wherein the PFC circuit is supplied at least with a measurement signal which reflects the power consumption of the load circuit or with an external control signal which indicates the power consumption, and a control circuit adjusts the mode of operation of the PFC circuit continuously or preferably in two or more steps, depending on the control signal or measurement signal.
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