H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 37/00 (2006.01) H05B 37/02 (2006.01) H05B 41/14 (2006.01)
Patent
CA 2529525
A method of converting a line voltage to an RMS load voltage in a lamp includes performing fixed forward phase-control clipping of a load voltage with a phase- control clipping circuit that provides an RMS load voltage to the lamp and providing pulses at constant time intervals from a time-based pulse source. conduction in a three- terminal thyristor in the phase-control clipping circuit is triggered with the pulses from the time-based pulse source independently of the line voltage magnitude, wherein periods of conduction in the three-terminal thyristor define a conduction angle of the phase-control clipping circuit.
Ballenger Matthew B.
Weyhrauch Ernest C.
Fetherstonhaugh & Co.
Osram Sylvania Inc.
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