Dimming circuit for controlling electrical power

Details Dimming circuit for controlling electrical power Dimming circuit for controlling electrical power

2007-03-12

2009-12-15

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

C315S158000, C315S291000, C315S224000, C315S312000

Reexamination Certificate

active

07633239

ABSTRACT:
A dimming circuit includes an isolated DC voltage source that is selectively coupled to a switch through which power is supplied from a source to a load. In a disclosed example, the switch comprises two MOSFETs. The isolated DC voltage source is selectively coupled directly to the gate and source of the MOSFETs to set them into an operative state for providing power to the load. A controller controls another switch that is operative to selectively control when the isolated DC voltage source is coupled to the switch.

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International Search Report and Written Opinion of the International Searching Authority for International application No. PCT/US2008/053255 mailed Sep. 18, 2008.
International Search Report and Written Opinion dated Sep. 18, 2008.

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