Systems and methods for powering a light emitting diode lamp

Details Systems and methods for powering a light emitting diode lamp Systems and methods for powering a light emitting diode lamp

2008-02-01

2010-11-16

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S294000, C315S360000

Reexamination Certificate

active

07834561

ABSTRACT:
In one embodiment, the present invention includes an electronic circuit for providing a power current to an LED lamp. The electronic circuit comprises a logic drive circuit, a VCO, a power switch, and a first current sensor. The VCO is coupled to provide a first logic control signal to the logic drive circuit. The power switch has a first terminal and second terminal coupled to deliver the power current to the LED lamp and a control terminal coupled to receive a power control signal from the logic drive circuit. The first current sensor is coupled to sense a peak current passing through the power switch and coupled to provide a second logic control signal to the logic drive circuit.

REFERENCES:
patent: 7561452 (2009-07-01), Mednik et al.
patent: 2007/0188114 (2007-08-01), Lys et al.
patent: 2008/0192514 (2008-08-01), Zhou et al.
patent: 2010/0052569 (2010-03-01), Hoogzaad et al.
patent: 2010/0148697 (2010-06-01), Bayat et al.

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