View Single Post
  #13  
Old 01-26-2011, 10:28 PM
GMGQ's Avatar
GMGQ GMGQ is offline
Member
 
Join Date: Sep 2005
Location: Vancouver, BC
Posts: 400
GMGQ is on a distinguished road
Default

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 View Post
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...
__________________
Gary
Tank was up for 7yrs and 10months. Thanks Everyone!

2016/2017 180Gallon Build Coming Soon...
Reply With Quote