Power supply for multiple discharge lamps and the current...

Details Power supply for multiple discharge lamps and the current... Power supply for multiple discharge lamps and the current...

2006-09-29

2008-08-12

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

C315S312000

Reexamination Certificate

active

07411356

ABSTRACT:
A power supply for discharge lamp includes a transformer and a current balance device, wherein the transformer includes a primary winding and a secondary winding and the current balance device is coupled between the secondary winding and a plurality of discharge lamps. The current balance device may include a single inductor wherein at least two windings are connected in series with each other and each serially-connected winding is coupled with a discharge lamp, and the other windings are respectively coupled with a discharge lamp. The current balance device may include two inductors wherein at least one winding of a first inductor is connected in series with at least one winding of a second inductor and each serially-connected winding is coupled with a discharge lamp, and the other windings of the first inductor and the other windings of the second inductor are respectively coupled with a discharge lamp.

REFERENCES:
patent: 4123690 (1978-10-01), Osteen
patent: 4574222 (1986-03-01), Anderson
patent: 4902942 (1990-02-01), El-Hamamsy
patent: 5036255 (1991-07-01), McKnight et al.
patent: 7034647 (2006-04-01), Yan et al.
patent: 2007/0007909 (2007-01-01), Kim et al.

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