Quote Originally Posted by DreadedHermie
Weezard, the 15.1V scenario is just hypothetical. I fried the leds that measured this way. I just wanted to know how to invoke The Law.

I've got the replacements glued on but haven't wired 'em yet. Been up all night (common problem) and I'm 6 hours ahead of you. No touchee $$$ leds till later! :stoned:

Gettin a little gun shy?

Anyway, suppose I've got a happy voltage dialed in for my blues, let's suppose these next ones want 14.8V to draw 1.2A. Here's the question: if I want to dim the blues, can I leave the voltage set where it is and just dial down the current limiter? (That way I could just eyeball the changes and not have to measure.) Or is the proper way to do this by dialing down the voltage?? Does it matter? Would one way create any more waste heat, or stress components more than the other way?
Changing the current WILL change the voltage as long as the load is relatively constant. So 6 of 1...
But with a current limit supply, it's best to vary the voltage because the current limit will keep the voltage "capped".

I'll need more coffee to respond to your earlier posts.

Solar powered 'Zard