Circuitry and methods for improving the performance of a...

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2007-12-25

2007-12-25

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C315S363000, C372S043010

Reexamination Certificate

active

11176126

ABSTRACT:
Light emitting elements with preselected or adjustable impedance characteristics are provided. Embodiments using a preselected impedance characteristic obtain significant performance benefits compared to the prior art. Embodiments having an adjustable impedance may alter the impedance associated with the light emitting component such that it has a substantially constant resistive or reactive impedance that improves certain performance attributes. This solution virtually eliminates the need for external compensation components and relieves the burden of impedance matching and circuit specialization from the driver circuit.

REFERENCES:
patent: 5517089 (1996-05-01), Ravid
patent: 6169371 (2001-01-01), Zimlich et al.
patent: 6304039 (2001-10-01), Appelberg et al.
patent: 6344780 (2002-02-01), Dobashi et al.

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