I have some 50w HPLEDs I want to power. Any help on circuitry design will be wonderful!
The specs are Vf of 15-18V and 3200ma for one and 10-12Vf with 4000ma
for the other. I want to build it cheaply and maybe use the LM350
(?) and resistors (?). I'm going to use a 350W computer power supply
since I got 2 of those lying around already. What resisters would
I need to use and such? Somewhere in a data sheet I found I
should use a 120 Ohm for R1 but no clue how R1's rating will effect R2
in combination. I'm a novice at these things so lay it out in dumb mans