Lamp driving apparatus having balance circuit units for a...

Details Lamp driving apparatus having balance circuit units for a... Lamp driving apparatus having balance circuit units for a...

2007-02-07

2009-12-15

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

C315S274000, C315S279000, C315S312000, C315S324000

Reexamination Certificate

active

07633240

ABSTRACT:
A lamp driving apparatus wherein a plurality of two-winding balance circuits are connected to a plurality of parallel-connected lamp groups so that all of the lamps may be illuminated even though ambient conditions cause some of the lamps to have low resistance. Capacitors are connected to first electrodes and certain of the balance coil windings are connected to second electrodes of one of the lamp groups while, in a second lamp group, others of the balance coil windings are connected to the first electrodes and capacitors are connected to the second electrodes thereof, current flowing through balance coil windings to some lamps being affected by current flowing through balance coil windings to other lamps.

REFERENCES:
patent: 5767630 (1998-06-01), Williams
patent: 5936359 (1999-08-01), Gibson
patent: 7271546 (2007-09-01), Nakano
patent: 7291987 (2007-11-01), Chang et al.
patent: 7309964 (2007-12-01), Wey et al.
patent: 7345431 (2008-03-01), Lee
patent: 7446750 (2008-11-01), Moon
patent: 7449848 (2008-11-01), Nishinosono
patent: 2005/0017658 (2005-01-01), Chien et al.
patent: 2005/0093484 (2005-05-01), Ball
patent: 2005/0140312 (2005-06-01), Nishinosono et al.
patent: 2006/0091821 (2006-05-01), Li et al.
patent: 2006/0273745 (2006-12-01), Wey et al.
patent: 2007/0046218 (2007-03-01), Ger et al.
patent: 2007/0085493 (2007-04-01), Kuo et al.
patent: 2007/0152608 (2007-07-01), Lee
patent: 2007/0247082 (2007-10-01), Ashikaga et al.

Affiliated with

Also associated with

Rating

Lamp driving apparatus having balance circuit units for a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lamp driving apparatus having balance circuit units for a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lamp driving apparatus having balance circuit units for a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4099539