Balancing transformers for multi-lamp operation

Details Balancing transformers for multi-lamp operation Balancing transformers for multi-lamp operation

2011-04-26

2011-04-26

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S276000, C315S277000, C315S308000

Reexamination Certificate

active

07932683

ABSTRACT:
A ring balancer comprising a plurality of balancing transformers facilitates current sharing in a multi-lamp backlight system. The balancing transformers have respective primary windings separately coupled in series with designated lamps and have respective secondary windings coupled together in a closed loop. The secondary windings conduct a common current and the respective primary windings conduct proportional currents to balance currents among the lamps. The ring balancer facilitates automatic lamp striking and the lamps can be advantageously driven by a common voltage source.

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