Abstract: An apparatus for power factor control includes a capacitor for producing a substantially DC voltage and a switch for controlling the amount of energy stored in the capacitor in response to a switching signal. The switching signal is produced by the power factor controller and is based on a sinusoidal waveform that is independent of the waveform of an AC supply voltage for energizing an electric load.
Type:
Grant
Filed:
August 31, 2000
Date of Patent:
October 9, 2001
Assignee:
Philips Electronics North America Corporation
Inventors:
Shenghong Wang, Ihor T. Wacyk, Demetri J. Giannopoulos