Circuit arrangement and method for operating at least one lamp

Details Circuit arrangement and method for operating at least one lamp Circuit arrangement and method for operating at least one lamp

2006-03-15

2008-10-07

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S309000, C315S360000

Reexamination Certificate

active

07432662

ABSTRACT:
The present invention relates to a circuit arrangement for operating at least one lamp (LA), which has a first filament (W1) and a second filament (W2), it comprising an apparatus (10) for determining a variable which is correlated with the temperature of at least one of the two filaments (W1; W2). It also relates to a method for operating at least one lamp, which has a first and second filament, a variable correlated with the temperature of at least one of the two filaments being determined prior to restarting the lamp.

REFERENCES:
patent: 3597652 (1971-08-01), Gates, Jr.
patent: 5854538 (1998-12-01), Krummel
patent: 6140771 (2000-10-01), Luger et al.
patent: 6198845 (2001-03-01), Tse et al.
patent: 6366031 (2002-04-01), Klien
patent: 6972531 (2005-12-01), Krummel
patent: 7187132 (2007-03-01), Bakre

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