Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2004-10-16
2010-11-23
Lee, Wilson (Department: 2163)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S2090SC
Reexamination Certificate
active
07839095
ABSTRACT:
An incandescent lamp includes a lamp voltage conversion circuit within the lamp and connected to a lamp terminal, where the voltage conversion circuit converts a first line voltage at the lamp terminal to a second RMS load voltage usable by a light emitting element of the lamp. The voltage conversion circuit includes a triac phase-controlled dimming circuit, which in turn includes a voltage controlled resistor (VCR) that varies a resistance in the phase-controlled dimming circuit as the first voltage varies so as to maintain the second voltage substantially constant. The VCR may be a junction field effect transistor VCR. The voltage conversion circuit may be an integrated circuit that is in the lamp base and connected between the lamp terminal and the light emitting element.
REFERENCES:
patent: 3869631 (1975-03-01), Anderson et al.
patent: 3886405 (1975-05-01), Kubo
patent: 4331914 (1982-05-01), Huber
patent: 4379237 (1983-04-01), Mosteller, Jr.
patent: 4437043 (1984-03-01), Pitel
patent: 4447764 (1984-05-01), Kornrumpf et al.
patent: 4467269 (1984-08-01), Barzen
patent: 4547704 (1985-10-01), Brinn et al.
patent: 4580080 (1986-04-01), Smith
patent: 4645982 (1987-02-01), Takayanagi
patent: 4728865 (1988-03-01), Daniels
patent: 4935691 (1990-06-01), Lamar
patent: 5017834 (1991-05-01), Farnsworth
patent: 5023519 (1991-06-01), Jensen
patent: 5036234 (1991-07-01), Friedrich et al.
patent: 5610480 (1997-03-01), Takayanagi
patent: 5781418 (1998-07-01), Chang et al.
patent: 6043611 (2000-03-01), Gradzki et al.
patent: 6285119 (2001-09-01), Sundhar
patent: 6445133 (2002-09-01), Lin et al.
patent: 7081714 (2006-07-01), Galosky
patent: 7132802 (2006-11-01), Fischer et al.
patent: 7318661 (2008-01-01), Catalano
patent: 2002/0047608 (2002-04-01), Takahashi et al.
patent: 2004/0207337 (2004-10-01), Fischer et al.
Ballenger Matthew B.
Kendrick George B.
Lee Wilson
Montana Shaun P.
Osram Sylvania Inc.
LandOfFree
Lamp with integral voltage converter having phase-controlled... 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 with integral voltage converter having phase-controlled..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lamp with integral voltage converter having phase-controlled... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4183921