Say i had a 12v 10a regulated voltage source, from a sla hooked up to a picoups charger/regulator.
I want to drive ~72w of leds (max watts, its a pwm controller), basically my strip lighting that is powered from a 12v 6a WW.
How would you go about regulating the current down to that with the highest effeciency?
What about 12v 700ma 10w led's? or 20w 12v led's in 10x2 parallel (or series if i get a boost converter)?
Basically, whats the most effecient way to current limit, but not constant current these led's from a 12v 10a max regulated source?
I just want to take that 12v source, and pwm it through some kind of dc-dc converter that limits current if possible with an external pwm rf dimmer inline before the converter. Either that, or a cheap driver that could be pwm'd with an arduino.