LIGHT ADJUSTABLE AC LED DEVICE
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
May 13, 2014
filing date -
Mar 26, 2014
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Abstract
A light adjustable AC (alternating-current) LED device is provided. A color temperature of the light adjustable AC LED device is decreased as decreased brightness thereof. The light adjustable AC LED device includes an AC power source, a plurality of power loops and a plurality of LED segments. The AC power source is for providing an AC voltage. Each of the power loops is electrically connected with the AC power source, and each of the LED segments is electrically connected with each power loop. When the AC voltage is gradually raised, each LED segment of each power loop is turned-on in sequence, thereby a color temperature of each LED segment being mixed in sequence; when the AC voltage is gradually dropped, each LED segment of each power loop is turned-off in reverse order.
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