Hi All, I found this circuit from on1aag on a thread that many participated in, but its not quite what I need. I altered it to suit my needs, but I don't know if what I did is right and I'm hoping someone can tell me if it looks like it will work. Also I couldn't read all of his values so I am also hoping to get some help with that. Can I attach Vdd, Vcc and Vss all to the same 13.5 volts. Mine is the computer generated, his is the hand written. Thanks for the help, adown