Reversible polarity LED lamp module using current regulator...

Details Reversible polarity LED lamp module using current regulator... Reversible polarity LED lamp module using current regulator...

2008-03-18

2008-03-18

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C345S076000, C345S082000

Reexamination Certificate

active

07345433

ABSTRACT:
A lamp module has a base with first and second electrical contacts for inserting into a socket in alternate orientations. A printed circuit board is mounted to the base and has a reverse polarity circuit coupled to the first and second electrical contacts for converting a DC potential across the first and second electrical contacts to a power supply voltage. A current regulator has a first terminal receiving the DC power supply voltage from the reverse polarity circuit. A programming circuit provides a programming current to a second terminal of the current regulator to generate an output current in response to the programming current. An LED matrix is mounted to the base and has an input coupled for receiving the output current of the current regulator. The LED matrix has interconnected LEDs which emit a light intensity in response to the output current of the current regulator.

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High Currency LED Driver, Semiconductor Components Industries Publication Order No. NUD4001/D, Oct. 2004—Rev. 4, 8 pages.
NUD4001 and NUD4011 Low Cost Integrated Current Sources for LEDS Lighting Applications . . . , Semiconductor Components Industries, LLC, Publication Order No. AND8156/D, Jul. 2004—Rev., 12 pages.

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