Lamp driving device and driving method thereof

Details Lamp driving device and driving method thereof Lamp driving device and driving method thereof

2006-06-13

2009-12-08

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

C315S101000, C315S106000, C315S107000

Reexamination Certificate

active

07629750

ABSTRACT:
A lamp driving device includes a switch circuit for supplying a signal; a transformer which boosts a voltage of the signal from the switch circuit and supplies the boosted voltage to at least one lamp; a safety circuit which compares a threshold value with at least one of the boosted voltage and a current through the lamp, and intercepts at least one of the boosted voltage and the current through the lamp in accordance with the comparison result; and a warming part for warming the lamp in an early stage with a voltage less than or equal to the threshold value.

REFERENCES:
patent: 5654605 (1997-08-01), Kawashima
patent: 5798614 (1998-08-01), Bishop
patent: 6127785 (2000-10-01), Williams
patent: 2003/0160574 (2003-08-01), Gray

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