Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2008-01-31
2010-11-23
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S287000, C315S307000, C323S274000, C323S282000
Reexamination Certificate
active
07839097
ABSTRACT:
The invention teaches a semiconductor circuit for driving an LED in which the current passing through the LED is regulated by adjusting the NMOS Rdson using a series of digital signals. The circuit maintains a high current accuracy over wide range of current changes while keeping a low voltage drop.
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Chen Lu
Shum Kin Edward
Dahyee Law Group
Jew Leon E.
Kinetic Technologies
Le Tung X
Owens Douglas W
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