Fluorescent light dimmer

Details Fluorescent light dimmer Fluorescent light dimmer

1996-08-16

1998-05-26

Pascal, Robert

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

315307, 315291, 315DIG4, 315DIG7, H05B 3702

Patent

active

057571422

ABSTRACT:
An electronic drive for fluorescent lamps that includes a feedback loop arrangement where a lumen or intensity setting is compared to the lamp current and the frequency of an inverter is changed to bring the lumen output of the lamp to a level that matches the setting. The bandwidth of the feedback loop is great enough such that the time delay around the feedback loop is faster than prior art designs, and is preferably about 50 microseconds. This fast feedback loop provides the advantage that fluorescent lamps, and especially the more non-linear fluorescent lamps, can to be dimmed down to 10-30% of normal full scale lumen output without extinguishing. The faster feedback loop also prevents flicker when as the lamp is dimmed.

REFERENCES:
patent: 4651060 (1987-03-01), Clark
patent: 4734650 (1988-03-01), Alley et al.
patent: 4766353 (1988-08-01), Burgess
patent: 4855646 (1989-08-01), Peckitt et al.
patent: 5345150 (1994-09-01), Biegel
Article entitled: ML4831EVAL User's Guide, by George A. Hall, printed on Jul. 7, 1994, ten pages.

Affiliated with

Also associated with

Rating

Fluorescent light dimmer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1965402