hi in this tutorial i will show you how to recycle old transformers into led coolerfirst :why cooling an led ,if you worked with power led before there is something you must know ,unlike normal small led which doesn't produce any heat (warm)power led (1watt or more) produce's alot of heat if it ran ...By: HAMZAMG1999
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from Instructables: exploring - technology - robots http://ift.tt/1IgHKpo
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