Quote Originally Posted by Weezard


There's a reason fo' dat.
No can!

Blues wants, 14.4V.
Reds, 10.0
Deep reds, 11.2

However, using an LM 317 current limit supply will only need about 2V.
headroom.
Find a 40V. 2A supply and throw 1. cheap, 3 terminal chip an; 1, resistor at it and you are done.
Need details? Jus' ask.

Aloha,
Weezard
Sounds like you are saying throw 40vdc into a lm317 and run it all in series?
mx4intx Reviewed by mx4intx on . Calling out to Weezard for LED advice My friend, I've read your stuff here and at Steve F.'s site. I want to build a dedicated flowering lamp using Ledengin 15 watters. (4 reds, 1 blue, and possibly 1 warm white; LM 317's so I can tweak the ratios.) Essentially, a copy of your 4+1 cake pan lamp but built on a 4 x 18" finned heatsink so I can see what's going on under it.) If I were to post my picks for power supply, resistor ratings / values, etc., would you critique and perhaps offer some guidance? I have already purchased Rating: 5