Electric lamp and discharge devices: systems – Pulsating or a.c. supply – With power factor control device
Reexamination Certificate
2008-04-29
2008-04-29
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
With power factor control device
Reexamination Certificate
active
11321801
ABSTRACT:
A buck converter generates a direct current (DC) bus voltage at a buck converter output. An inverter circuit is coupled to the buck converter and configured to receive the generated DC voltage and convert the DC voltage into an alternating current (AC) voltage to drive a lamp. A power control circuit is coupled to the buck converter output and configured to provide a control voltage signal to the buck converter so that the buck converter generates the DC voltage and current of a predetermined value. A crest factor reduction circuit is coupled (a) to the buck converter output to sense a rate of change in the generated DC bus voltage, and (b) to the power control circuit to modify the control voltage signal based on the sensed rate of change in the DC bus voltage.
REFERENCES:
patent: 4928038 (1990-05-01), Nerone
patent: 6026126 (2000-02-01), Gaetano
patent: 6462520 (2002-10-01), Mangtani et al.
patent: 6489755 (2002-12-01), Boudreaux et al.
patent: 6504423 (2003-01-01), Riggio et al.
patent: 6674248 (2004-01-01), Newman et al.
patent: 6867553 (2005-03-01), Nerone et al.
patent: 6876157 (2005-04-01), Henry
patent: 6969958 (2005-11-01), Henry
patent: 7075251 (2006-07-01), Chen et al.
patent: 7187136 (2007-03-01), Fiorello
patent: 7196575 (2007-03-01), Kim
patent: 2003/0062849 (2003-04-01), Prasad et al.
patent: 2003/0122505 (2003-07-01), Huber et al.
patent: 199 46 253 (2001-04-01), None
patent: WO 03/059022 (2003-07-01), None
patent: WO 2004/045256 (2004-05-01), None
Ilyes Laszlo S.
Nerone Louis R.
A Minh Dieu
Fay Sharpe LLP
General Electric Company
Owens Douglas W.
LandOfFree
Crest factor reduction method for electronically ballasted... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Crest factor reduction method for electronically ballasted..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crest factor reduction method for electronically ballasted... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3920232