AC to DC LED illumination devices, systems and methods

Details AC to DC LED illumination devices, systems and methods AC to DC LED illumination devices, systems and methods

2008-11-03

2011-10-11

Chang, Daniel D (Department: 2819)

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Flashers

C315S294000, C315S192000, C315S193000

Reexamination Certificate

active

08035307

ABSTRACT:
Illumination devices (10), systems and methods that convert an alternating current (AC) supply (14) to a direct current (DC) for powering a plurality of light emitting diodes (LEDs) are disclosed. An illumination device (10) comprises a full wave rectifier (12) for converting the AC supply into a direct current (DC). A current limiting diode (CLD) module (16), comprising at least two CLDs coupled in parallel, is coupled in series to an output of the full wave rectifier and a light emitting diode (LED) module (18) comprising a plurality of LEDs is coupled in series between an output of the CLD module (16) and the full wave rectifier (12).

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Sze Chin, “Boosting the Current Limit of Current Limiting Diodes,” ECN, Oct. 2007.

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