Controller circuit

Details Controller circuit Controller circuit

2006-04-04

2006-04-04

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S247000

Reexamination Certificate

active

07023147

ABSTRACT:
A circuit used to control the brightness of a number of light emitting diodes (LEDs) in an array, such that the color and brightness of the light produced by the array may be varied. The circuit is optimized to operate at high efficiency, permitting its use in confined spaces with poor cooling. The circuit permits a variety of configurations of LEDs to be controlled and driven from a range of line voltages. The circuit is further optimized to use few components to achieve its function.

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Simonetti D S L et a. : “Control conditions to Improve Conducted EMI by Switching Frequency Modulation of Basic Discontinuous PWM Preregulators.” Power Electronics Specialists Conference PESC '94 Record. 25th Annual IEEE Taipei, Taiwan Jun. 20-25, 1994, New York, NY, USA, IEEE. Jun. 20, 1994, pp. 11890-1187, XP010121366, ISBN: 0-7803-1859-5.

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