H - Electricity – 05 – B
Patent
H - Electricity
05
B
315/39
H05B 41/16 (2006.01) H05B 41/04 (2006.01) H05B 41/232 (2006.01) H05B 41/36 (2006.01)
Patent
CA 1194093
ABSTRACT: Sequence start lamp ballast with current spike suppression means. A ballast for a sequence start series operating circuit that includes two rapid start gaseous discharge lamps. The circuit includes a transformer with a primary winding and a loosely coupled secondary winding, a series first capacitor for providing a leading current when both lamps have been ignited and are operating and a second capacitor shunting the second-to-ignite lamp to by-pass that lamp during ignition of the first-to-ignite lamp and thereafter to develop a voltage across the second capaci- tor sufficient to ignite the second-to-ignite lamp when current flows in the by-pass branch. The lamps are of a variety which produces an undesirable current peak in the second-to-ignite lamp on each half cycle because the shunting second capacitor dumps its charge accumulated during each half cycle into that lamp. The secondary winding is made up of a main part and an auxiliary part, the auxiliary part being connected in series with the se- cond capacitor in the by-pass branch so that an inductive reactance is added to the capacitance in that branch for suppressing the current peak in the second-to-ignite lamp on each half cycle. The auxiliary part of the secondary winding does not participate in the ignition of the first- to-ignite lamp but it does participate voltage-wise in the operation of both lamps in series.
421780
Advance Transformer Co.
Van Steinburg C.e.
LandOfFree
Sequence start lamp ballast with current spike suppression... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sequence start lamp ballast with current spike suppression..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sequence start lamp ballast with current spike suppression... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1240153