Method for starting a discharge lamp using high energy...

Details Method for starting a discharge lamp using high energy... Method for starting a discharge lamp using high energy...

2005-05-31

2005-05-31

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S219000, C315S2090SC

Reexamination Certificate

active

06900600

ABSTRACT:
The described DC to AC inverter efficiently controls the amount of electrical power used to drive a cold cathode fluorescent lamp (CCFL). The inverter uses a full bridge that is controlled to deliver energy to the CCFL using pulse width modulation (PWM). Additionally, during striking of the CCFL, a wider initial energy pulse is used. During normal operation, a lower energy pulse is used.

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patent: 6316881 (2001-11-01), Shannon et al.
patent: 6633138 (2003-10-01), Shannon et al.
Sam Ben-Yaakov et al, “The Simplest Electronic Ballast for HID Lamps,” Applied Power Electronics Conference and Exposition, Eleventh Annual Conference Proceedings, Mar. 3, 1996, pp. 634-640, IEEE, New York, NY, USA.

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