I am making a small solid state tesla coil. I have the secondary coil, toroid and primary coil but am not sure what to do for a control circuit. I was planning on using two 9 volt batteries for power. Would a DC to Pulse Width Modulator work? This is the one I was thinking of - http://www.cablesandconnectors.com/PIX/velk8004.jpg Will this work with batteries? Also, will I need anything else? PS- I was planning on adding a MIDI Interrupter using fiber optics later on for playing MIDI files on my tesla coil and possibly plugging in a keyboard.