Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit
Reexamination Certificate
2006-05-30
2006-05-30
Lee, Wilson (Department: 2821)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Impedance or current regulator in the supply circuit
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.
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patent: 5757140 (1998-05-01), Nilssen
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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
Hoo Henry
Liu Ken
Schmitt Harald
Twardzik Rene
Lee Wilson
Patent Treuhand Gesellschaft fur elektrische Gluhlampen mbH
Vy Hung Tran
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