Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate
2008-05-20
2008-05-20
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
C315S307000, C315S291000, C315SDIG002, C315S051000, C315S072000
Reexamination Certificate
active
11541811
ABSTRACT:
A lamp contains a voltage conversion circuit that converts a line voltage to an RMS load voltage and includes a switch and a microcontroller that operates the switch to define the RMS load voltage. The microcontroller senses a load voltage of the lamp, compares the sensed load voltage to a reference RMS voltage, and operates the switch in response to the comparison so that the RMS load voltage is substantially constant at the reference RMS voltage over an operating range of the line voltage and so that the RMS load voltage decreases with decreasing line voltage at line voltages less than the operating range. The operating range of the line voltage is defined to have a minimum that is a non-zero line voltage at which a load current is a predetermined maximum. The voltage conversion circuit may be a phase clipping circuit or a pulse width modulation circuit.
REFERENCES:
patent: 2012825 (1935-08-01), Millner et al.
patent: 3275922 (1966-09-01), Meyer et al.
patent: 3609402 (1971-09-01), Ferro
patent: 3869631 (1975-03-01), Anderson et al.
patent: 4224563 (1980-09-01), Hardy
patent: 4331914 (1982-05-01), Huber
patent: 4500813 (1985-02-01), Weedall
patent: 4547704 (1985-10-01), Brinn et al.
patent: 4645982 (1987-02-01), Takayanagi
patent: 4922155 (1990-05-01), Morris et al.
patent: 4988921 (1991-01-01), Ratner et al.
patent: 5519311 (1996-05-01), Widmayer
patent: 5994844 (1999-11-01), Crawford et al.
patent: 6208090 (2001-03-01), Skilskyj et al.
patent: 6285119 (2001-09-01), Sundhar
patent: 6445133 (2002-09-01), Lin et al.
patent: 6600255 (2003-07-01), Kai et al.
patent: 6727665 (2004-04-01), Yao
patent: 2002/0047608 (2002-04-01), Takahashi et al.
patent: 2004/0085049 (2004-05-01), Orozco
patent: 2005/0275354 (2005-12-01), Hausman, Jr. et al.
Ballenger Matthew B.
Eastwood Brent J.
Kendrick George B.
Weyhrauch Ernest C.
Alemu Ephrem
Bessone Carlo S.
Osram Sylvania Inc.
Owens Douglas W.
LandOfFree
Lamp containing power controller having current limited RMS... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lamp containing power controller having current limited RMS..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lamp containing power controller having current limited RMS... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3946102