Showing posts with label Solar Power Cell. Show all posts
Showing posts with label Solar Power Cell. Show all posts

Wednesday, November 3, 2010

LED powered by Silicon Solar Cell in overcast sky

I was amazed that a small solar cell assembly sold by Sparkfun.com was able to lightup a standard red 1.8v LED under only an overcast sky.
Also noteable was the fact that i did not need a series resistor as the inherent resistance of usually 8 ohms combined with the post resistance allowed 5-15 mA to flow no problem.
This was just a proof of concept and not really usefull in itself, but i should be able to power ano embedded controller like the propeller or xmos G4 using only a panel or two.