Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Reissue Patent
2011-06-07
2011-06-07
Tran, Thuy Vinh (Department: 2821)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Periodic switch cut-out
C315S287000, C315S308000, C315S360000
Reissue Patent
active
RE042425
ABSTRACT:
A two-wire dimmer for control of a lighting load from an alternating-current (AC) power source includes a semiconductor switch, a power supply, and a control circuit. The power supply includes an energy storage input capacitor that is able to charge only when the semiconductor switch is non-conductive. The control circuit continuously monitors the voltage on the input capacitor and automatically decreases the maximum allowable conduction time of the semiconductor switch when the voltage falls to a level that will not guarantee proper operation of the power supply. The dimmer of the present invention is able to provide the maximum possible conduction time of the semiconductor switch at high end (i.e., maximum light intensity) while simultaneously ensuring sufficient charging time for proper operation of the power supply, and hence, the dimmer.
REFERENCES:
patent: 3471771 (1969-10-01), Mortimer
patent: 4242627 (1980-12-01), Kisiel
patent: 4300090 (1981-11-01), Weber
patent: 4321523 (1982-03-01), Hammel
patent: 4328528 (1982-05-01), Kompelien
patent: 4389608 (1983-06-01), Dahl et al.
patent: 4504778 (1985-03-01), Evans
patent: 4641233 (1987-02-01), Roy
patent: 4878010 (1989-10-01), Weber
patent: 4893063 (1990-01-01), Pernyeszi
patent: 5030890 (1991-07-01), Johnson
patent: 5081411 (1992-01-01), Walker
patent: 5214369 (1993-05-01), McCrea
patent: RE35220 (1996-04-01), Johnson
patent: 5604387 (1997-02-01), Cheyne
patent: 5631542 (1997-05-01), Lohr et al.
patent: 5652504 (1997-07-01), Bangerter
patent: 5838555 (1998-11-01), Lejeune et al.
patent: 5903139 (1999-05-01), Kompelien
patent: 6057674 (2000-05-01), Bangerter
patent: 6061259 (2000-05-01), DeMichele
patent: 6111368 (2000-08-01), Luchaco
patent: 6169391 (2001-01-01), Lei
patent: 6205041 (2001-03-01), Baker
patent: 6347028 (2002-02-01), Hausman et al.
patent: 6566768 (2003-05-01), Zimmerman et al.
patent: 6657418 (2003-12-01), Atherton
patent: 6674248 (2004-01-01), Newman et al.
patent: 6727665 (2004-04-01), Yao
patent: 7005762 (2006-02-01), Black et al.
patent: 7193404 (2007-03-01), Weightman
patent: 7573436 (2009-08-01), Webb et al.
DeJonge Stuart
Kumar Russikesh
Lutron Electronics Co. Inc.
Rose Mark E.
Smith Philip N.
Tran Thuy Vinh
LandOfFree
Dimmer having a power supply monitoring circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dimmer having a power supply monitoring circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dimmer having a power supply monitoring circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2656522