Low flicker LED driving circuit with high power factor
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United States of America Patent
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Jun 28, 2016
Grant Date -
Dec 10, 2015
app pub date -
Jun 6, 2014
filing date -
Jun 6, 2014
priority date (Note) -
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Abstract
An LED-based lighting apparatus comprises a rectified AC voltage source having a rectified output connected to a storage capacitor through a switching device, a plurality of LED segments controlled by a linear driving circuit and at least one charging path connected between the LED segments and the storage capacitor. One or more controllable linear LED driving units may be connected in parallel with the storage capacitor to provide balance between reducing flicker and increasing power factor of the lighting apparatus.
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