Electronic dimming ballast for cold cathode fluorescent lamp

Details Electronic dimming ballast for cold cathode fluorescent lamp Electronic dimming ballast for cold cathode fluorescent lamp

2005-05-31

2005-05-31

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

C315S272000, C315S2090SC, C315S291000, C315SDIG004

Reexamination Certificate

active

06900599

ABSTRACT:
An electronic ballast for powering a cold cathode fluorescent lamp of an electronic display device comprising: a rectifier coupled to a source of AC power for producing a rectified DC output voltage, a power factor correction circuit receiving the rectified DC output voltage and providing an increased voltage DC bus voltage, an electronic switching circuit comprising at least one electronic switch for switching the DC bus voltage to provide a switched voltage for driving a cold cathode fluorescent lamp, the switched voltage being provided to the lamp through an output stage comprising a resonant LC circuit; and an electronic ballast control circuit for controlling a switching operation of the electronic switching circuit, the electronic ballast being provided in a housing for the electronic display device.

REFERENCES:
patent: 5394064 (1995-02-01), Ranganath et al.
patent: 5583402 (1996-12-01), Moisin et al.
patent: 5604411 (1997-02-01), Venkitasubrahmanian et al.
patent: 5747942 (1998-05-01), Ranganath
patent: 5900700 (1999-05-01), Arndt et al.
patent: 6008593 (1999-12-01), Ribarich
patent: 6031338 (2000-02-01), Yoon et al.
patent: 6031342 (2000-02-01), Ribarich et al.
patent: 6040661 (2000-03-01), Bogdan
patent: 6054815 (2000-04-01), Sugita et al.
patent: 6144360 (2000-11-01), Evanicky et al.
patent: 6259215 (2001-07-01), Roman
patent: 6329786 (2001-12-01), Ono
patent: 6362575 (2002-03-01), Chang et al.
patent: 6452344 (2002-09-01), MacAdam et al.
patent: 6462941 (2002-10-01), Hulick et al.
patent: 6469453 (2002-10-01), Tajika et al.
patent: 6486616 (2002-11-01), Liu et al.
patent: 6496236 (2002-12-01), Cole et al.
patent: 6509696 (2003-01-01), Bruning et al.
patent: 6642674 (2003-11-01), Liao et al.
patent: 2003/0179577 (2003-09-01), Marsh
International Search Report dated Aug. 5, 2002.

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