Electronic ballast using cut and save technology

Details Electronic ballast using cut and save technology Electronic ballast using cut and save technology

2005-08-23

2005-08-23

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Discharge control discharge device load

C315S279000, C315S276000, C315S2090SC

Reexamination Certificate

active

06933684

ABSTRACT:
An ideal filament preheat technique in flourescence lamp is supplied by an adjusting circuit, an output circuit and a control circuit. At the filament preheating stage, an adequate preheating voltage is provided for the filament of the lamp tube, and the voltage cross over both ends of the lamp tube is reduced, thereby preventing glow current in preheating. When the preheating stage is finished and starting stage begins, the voltage between both ends of the lamp tube increases simultaneously, and then reaches a break-down voltage of the lamp tube, then the lamp tube is lit to enter a normal operation stage, the preheating voltage of the filament is cutoff under the control circuit, so as to save the filament power consumption. Therefore, the efficiency of the electronic ballast is improved, and the operation life of the flourescent lamp tube is extended.

REFERENCES:
patent: 4258295 (1981-03-01), Siglock
patent: 4425530 (1984-01-01), Hammer et al.
patent: 5179326 (1993-01-01), Nilssen
patent: 5565740 (1996-10-01), Hiramatsu et al.
patent: 5586016 (1996-12-01), Konopka et al.
patent: 6028400 (2000-02-01), Pol et al.
patent: 6111369 (2000-08-01), Pinchuk et al.
patent: 6169669 (2001-01-01), Choudhury
patent: 6300726 (2001-10-01), Daub
patent: 6362575 (2002-03-01), Chang et al.
patent: 6680585 (2004-01-01), Trestman
patent: 2002/0125834 (2002-09-01), Shoji et al.
patent: 2209423 (1995-10-01), None
patent: 2278329 (1998-04-01), None
patent: 1046616 (1999-08-01), None
patent: 38 41 095 (1990-06-01), None
patent: 41 43 488 (1995-11-01), None

Affiliated with

Also associated with

Rating

Electronic ballast using cut and save technology does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic ballast using cut and save technology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic ballast using cut and save technology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3479125