Ceramic metal halide lamp bi-modal power regulation control

Details Ceramic metal halide lamp bi-modal power regulation control Ceramic metal halide lamp bi-modal power regulation control

2011-01-04

2011-01-04

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C315S287000, C315S291000, C315S307000

Reexamination Certificate

active

07863827

ABSTRACT:
A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The switch selectively alters an inductance of the inductor to switch between a first frequency of the oscillator and a second frequency of the oscillator different than the first. The controller monitors a current of a power supply loop of the oscillator and a voltage of the oscillator and determines a duty cycle as a function of the monitored voltage and current. The duty cycle is indicative of the percentage of time that the oscillator is to operate at the first frequency versus the second frequency.

REFERENCES:
patent: 5491386 (1996-02-01), Eriguchi et al.
patent: 5880564 (1999-03-01), Franck
patent: 6384544 (2002-05-01), Greenwood et al.
patent: 6404140 (2002-06-01), Nerone
patent: 6407514 (2002-06-01), Glaser et al.
patent: 6479949 (2002-11-01), Nerone et al.
patent: 6771029 (2004-08-01), Ribarich et al.
patent: 6819057 (2004-11-01), Alexandrov
patent: 6894437 (2005-05-01), Okamoto et al.
patent: 7211966 (2007-05-01), Green et al.
patent: 2006/0261756 (2006-11-01), Matsui et al.
patent: 2006/0284570 (2006-12-01), Gong et al.
patent: 2007/0290701 (2007-12-01), Nguyen
patent: 1 326 485 (2003-07-01), None
patent: 1 406 475 (2004-04-01), None
Lin et al., “2.65 MHz Self-oscillating Electronic Ballast with Constant Lamp-Current Control for Metal Halide Lamp”, 37th IEEE Power Electronics Specialists Conference, Jun. 18, 2006, 6 pgs.
Wu Tsia-Fu et al., “An Electronic Dimming Ballast with Bifrequency and Fuzzy Logic Control”, IEEE Transactions on Industry Applications, Sep./Oct. 2000, all pages, vol. 36 No. 5, IEEE Service Center, Piscataway, NJ, US.
Gabriele Benedetti, PCT International Search Report and Written Opinion of the International Searching Authority, mailed Nov. 27, 2009, all pages, PCT Forms PCT/ISA/210 and PCT/ISA/237, EPO, Rijswijk, The Netherlands.

Affiliated with

Also associated with

Rating

Ceramic metal halide lamp bi-modal power regulation control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ceramic metal halide lamp bi-modal power regulation control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic metal halide lamp bi-modal power regulation control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2708683