Universal method for driving LEDs using high voltage

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United States of America Patent

PATENT NO 9794992
SERIAL NO

15496029

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Abstract

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An apparatus for driving LEDs using high voltage includes two LED driving circuits and two switches that can be turned on or off by a universal controller so as to connect the two LED driving circuits in two different configurations. When the input voltage is in a range from rectified 90 volt AC to rectified 140 volt AC, the two switches are controlled in such a way that the two LED driving circuits are connected in parallel. When the input voltage VIN is in a range from rectified 180 volt AC to rectified 265 volt AC, the two switches are controlled to connect the LED segments of the LED unit in one LED driving circuit in series with the other LED driving circuit.

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Patent Owner(s)

Patent OwnerAddress
VASTVIEW TECHNOLOGY INC4F NO 5 TECHNOLOGY RD HSIN-CHU SCIENCE BASED INDUSTRIAL PARK HSIN-CHU HSIEN R O C

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Hung-Chi Hsinchu County, TW 21 176
Shen, Yuhren Hsinchu County, TW 29 268

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