Dimmer for resistive or capacitive loads

Details Dimmer for resistive or capacitive loads Dimmer for resistive or capacitive loads

2006-10-10

2006-10-10

Lee, Wilson (Department: 2163)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000

Reexamination Certificate

active

07119497

ABSTRACT:
A power dimmer for an A.C. load comprising, between two terminals, two one-way switches connected in anti-parallel and controllable to be turned off and turned on, each switch being controlled by a driver circuit setting the turn-off times of each of the switches with respect to a reference value, each driver circuit being associated with a supply circuit comprising a voltage storage element in series with a one-way rectifying element, all in parallel with a voltage-limiting element, the two supply circuits being connected to each other by a capacitor and the respective supply voltages of the driver circuits being sampled across the respective capacitors of each supply circuit.

REFERENCES:
patent: 4520295 (1985-05-01), Bolhuis
patent: 5796599 (1998-08-01), Raonic et al.
patent: 6724157 (2004-04-01), Kazanov et al.
patent: 6900601 (2005-05-01), Peron

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