DIY LED Hood: Prebuild Thoughts...

GMGQ · #13 01-26-2011, 10:28 PM

How did you calculate that?

And what is that in terms of a power supply's AC_out and Amps? So in your example, would this one suffice?
http://ledsupply.com/04004-p96.php

Quote:

Originally Posted by Lampshade

Your AC should be pretty much Watts in = Watts out/efficiency

Drivers vary efficiency depending on how well they're used(they like to be run near max all the time). usually >70% though. so 48LED's, driven at 3v per LED, at 750mA(3/4 load) would be about 86.4W at 80%, so 0.72A at 120V. Not bad at all...