Inverter with dimming function

Details Inverter with dimming function Inverter with dimming function

2008-01-29

2008-01-29

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S276000, C315S299000, C315SDIG002

Reexamination Certificate

active

07323832

ABSTRACT:
A control circuit for an inverter for driving a fluorescent lamp includes a first triangular wave signal generator for use in analog dimming control, and a second triangular wave signal generator for use in burst dimming. The first triangular wave signal generator oscillates at a frequency higher than that of the second triangular wave signal generator. A semiconductor substrate on which the control circuit is integrated is partitioned into at least two areas by a fixed potential wiring. A circuit block including the first triangular wave signal generator is placed in one of the areas, and a circuit block including the second triangular wave signal generator and the comparator for burst dimming is placed in the other area.

REFERENCES:
patent: 5747942 (1998-05-01), Ranganath
patent: 5751115 (1998-05-01), Jayaraman et al.
patent: 6114814 (2000-09-01), Shannon et al.
patent: 6633138 (2003-10-01), Shannon et al.
patent: 7095635 (2006-08-01), Fukumoto
patent: 7236377 (2007-06-01), Fukumoto
patent: 2003-323994 (2003-11-01), None
patent: 2005-108784 (2005-04-01), None

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