Quote Originally Posted by mx4intx
Nice! I am glad I asked. My big problem is finding a cheap small 40V 2A supply. I already have a homeless 19V 2.1A laptop supply. I may end up just splitting the blue and red into two independent strings.
That's what I ended up doing on one of the arrays.
Used dropping resistors.

The laptop supplies are excellent and can mount piggyback on the 'sink.
Hope ya no mind if a watch.

Aloha,
Weeze