I have a few of these to power different 40 watt blue LEDs. They work reliably with no heat issues. They are forgiving if you ever cross wires and make a spark. Mine have worked for days continuously. There's a bit of high-pitched noise. I have these open on a desk though. If they were in a case you might not hear it. The way things are connected makes ... Read more
Seems to be well-built and sturdy. Has leads already attached to connect to the LED. Took 3 weeks before product finally shipped. Cost is higher than the 50w driver also sold on DX.
There is a fairly long lag between turning on the AC and the LED lighting up -- 1.5-2 seconds. You have to solder your own leads at the AC end, though it is clearly marked.... Read more
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