H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 41/14 (2006.01) H05B 41/16 (2006.01)
Patent
CA 2512358
A circuit for igniting a high intensity discharge lamp is disclosed. The circuit comprises a rectifier circuit coupled to receive an alternating current line voltage. A flyback converter coupled to the rectifier circuit has an inductor comprising a primary inductive winding and a secondary inductive winding. Finally, an open circuit voltage circuit coupled to the secondary inductive winding couples a supplement inductive winding to the secondary winding during ignition. A method of igniting a high intensity discharge lamp is also disclosed. The method comprises the steps of generating a DC voltage for the high intensity discharge lamp by way of a flyback converter; providing an inductive winding comprising a primary inductive winding and a secondary inductive winding in the flyback converter; and coupling a supplement inductive winding couple to the secondary winding during ignition.
Fetherstonhaugh & Co.
Osram Sylvania Inc.
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