Fixed reverse phase switching power supply with time-based...

Details Fixed reverse phase switching power supply with time-based... Fixed reverse phase switching power supply with time-based...

H - Electricity

02

M

H02M 5/293 (2006.01) H01K 1/62 (2006.01) H05B 37/00 (2006.01) H05B 39/00 (2006.01)

Patent

CA 2528562

A phase-control power controller that converts a line voltage to an RMS load voltage includes a fixed, reverse phase-control clipping circuit that performs phase- control clipping of a load voltage to provide an RMS load voltage. A conduction angle of the phase-control clipping circuit is defined by a time-based pulse source that triggers conduction in the phase-control clipping circuit independently of line voltage magnitude. The phase-control clipping circuit includes a transistor switch whose gate receives positive polarity signals from the time-based pulse source to trigger conduction of the phase-control clipping circuit. The power controller may be in a voltage conversion circuit that converts a line voltage at a lamp terminal to the RMS load voltage usable by a light emitting element of the lamp.

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