Lamp driving system controlled by electrical isolation

Details Lamp driving system controlled by electrical isolation Lamp driving system controlled by electrical isolation

2007-08-14

2007-08-14

Vu, David (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

C315S247000, C315S307000

Reexamination Certificate

active

11517381

ABSTRACT:
A lamp driving system controlled by electrical isolating is provided. The front-end power stage and the back-end power stage of the lamp driving system are electrically isolated each other by an electrical isolator. The lamp driving system includes a PFC controller for outputting a high voltage into a switching circuit. The switching circuit outputs a lamp driving voltage into the primary side of a boost transformer. A loading resonant network couples to the secondary side of the boost transformer, and generates a feedback signal. There are having the primary side of the electrical isolator, the PFC controller, the switching circuit and boost transformer coupled to a primary ground end. The PFC controller, the loading resonant network and the secondary side of the electrical isolator are coupled to a secondary ground end.

REFERENCES:
patent: 6072283 (2000-06-01), Hedrei et al.
patent: 6181086 (2001-01-01), Katyl et al.

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