I just got the LedEngin 40w cool white led.
It require 43.7v and about 700-1000mA to run. I am having a hard time finding a ~44v portable power source. Can anyone direct me to a dc-dc converter, 12v(+/-5v) to 44v.
wow, 12 Cree chips in one LED!
Edit: if you want to run in parallel, couldn't you just knock off those little black jumpers that are soldered on?
the black things not are jumpers.
are protection zener diodes
http://www.ledengin.com/products/40wLZ/LZC-00CW40.pdf
....maybe no way to set the leds in parallel