Patent ID: 7956546

Claim:
An apparatus comprising: a heat sink; an LED light source mounted on said heat sink; a power adapter configured to be interchangeable with a conventional bulb power adapter; a controller that provides an average current to said LED light source when power is coupled to said apparatus via said power adapter, said average current causing said LED light source to generate light of a predetermined standard intensity that is substantially independent of variations in said LED light source; a first half-wave rectifier that converts an AC voltage coupled to said power adapter to a first half-wave rectifier having a duty cycle that provides said predetermined light intensity when said first half-wave rectified power source is used to power said light source, wherein said LED light source comprises first and second LEDs and wherein said first LED is powered by said first half-wave rectifier and said second LED is powered by a second half-wave rectifier having an output that is 180 degrees out of phase with said first half-wave rectifier, and; wherein said controller comprises an integrated circuit mounted on said heat sink.