Circuit arrangement for operating light sources

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit

Reexamination Certificate

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Details

C315S291000

Reexamination Certificate

active

07053563

ABSTRACT:
In a circuit arrangement for operating light sources, inexpensive technologies for power factor correction can be used in combination. Owing to the combination of a dual charge pump and a valley fill circuit it is also possible to adhere to relevant standards for rated current harmonics even at rated powers of over 25 W whilst maintaining low component loading.

REFERENCES:
patent: 4949013 (1990-08-01), Zuchtriegel
patent: 5512801 (1996-04-01), Nilssen
patent: 5757140 (1998-05-01), Nilssen
patent: 5939837 (1999-08-01), Canova
patent: 6316883 (2001-11-01), Cho et al.
patent: 6459213 (2002-10-01), Nilssen
patent: 6700331 (2004-03-01), Benensohn
patent: WO 90/09087 (1990-08-01), None
patent: WO 02/47441 (2001-11-01), None
patent: WO 02/47441 (2002-06-01), None

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