http://www.mfgsupply.com/m/c/31-8786.html?id=7qILfYVr
David
Thanks, that's the idea. But I was looking for the home built circuit.

Ron Thompson
On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA

http://www.plansandprojects.com

The ultimate result of shielding men from the effects of folly is
to fill the world with fools.
--Herbert Spencer, English Philosopher (1820-1903)