Square wave drive system

Details Square wave drive system Square wave drive system

2005-11-29

2005-11-29

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000, C315SDIG002

Reexamination Certificate

active

06969958

ABSTRACT:
A power conversion circuit improves lamp operating life and lamp efficiency by driving a fluorescent lamp with a square wave signal. The square wave signal is an alternating current signal with relatively fast transition times. The square wave signal advantageously reduces lamp current crest factor for more efficient operation of the fluorescent lamp.

REFERENCES:
patent: 4544863 (1985-10-01), Hashimoto
patent: 5235254 (1993-08-01), Ho
patent: 5410221 (1995-04-01), Mattas et al.
patent: 5539281 (1996-07-01), Shackle et al.
patent: 5612594 (1997-03-01), Maheshwari
patent: 5652479 (1997-07-01), LoCascio et al.
patent: 5744915 (1998-04-01), Nilssen
patent: 5770925 (1998-06-01), Konopka et al.
patent: 5818172 (1998-10-01), Lee
patent: 5923129 (1999-07-01), Henry
patent: 5930121 (1999-07-01), Henry
patent: 6002210 (1999-12-01), Nilssen
patent: 6137240 (2000-10-01), Bogdan
patent: 6150772 (2000-11-01), Crane
patent: 6181084 (2001-01-01), Lau
patent: 6198234 (2001-03-01), Henry
patent: 6351080 (2002-02-01), Birk et al.
patent: 6630797 (2003-10-01), Qian et al.
patent: 6724602 (2004-04-01), Giannopoulos

Affiliated with

Also associated with

Rating

Square wave drive system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Square wave drive system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Square wave drive system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3522017