Hey, Guy's and Martin, I know yall are good at electrical engineering, By the way Ya'll is Texan for You all. I'm just a dam got technician and a parts man. Ya'll design and I build. I just think and making light of the back and fourth engineering going on that a lot of people almost and including my self don't have a clue of what your doing. If you want to switch on and off and delay here and there. Then design it and I will build it. But, 2n's and 3n's and diodes and pulsating, gating and all the electrical engineering again is not understood by a lot of people. Just having fun, don't take me to serious. John