This custom circuit board picks up some of the pieces from a wall wart to drive a high-power LED.  The basic concept is to keep the high-voltage components and swap out the low voltage ones for parts that will be able to drive the 10W load. The PCB is custom designed, but you can see that it was shaped to match the wall wort's original board. To the right is the original 500mA transformer. The … [Read more...]