H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 5/257 (2006.01) H02M 1/08 (2006.01) H05B 41/36 (2006.01)
Patent
CA 2528444
A phase-control power controller that converts a line voltage to an RMS load voltage includes a fixed forward phase-control clipping circuit that clips 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 a three- terminal thyristor with pulses provided at constant time intervals independently of line voltage magnitude. The power controller may be in a voltage conversion circuit that converts the line voltage at a lamp terminal to the RMS load voltage usable by a light emitting element of the lamp.
Ballenger Matthew B.
Weyhrauch Ernest C.
Fetherstonhaugh & Co.
Osram Sylvania Inc.
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