There are some great sites out there explaining the basics of Tesla coil theory and operation, so I would be re-inventing the wheel if I made one. Here are some good ones, and a little searching will yield many more. http://home.earthlink.net/~electronxlc/howworks.html http://home.grics.net/~mhammer/coil.htm http://www.stargazing.net/Astroman/Theory.html http://www.apc.net/bturner/coils.htm http://hot-streamer.com/ http://home.earthlink.net/~jimlux/hv/hvmain.htm Home About Us Tesla Coils The Hydrogen Fuel Cell Robot Project Chronicles Classes - Mini Sumobots Miscellaneous Experiments - Acoustic Laser - Coil Gun/Gauss Cannon Miscellaneous High Voltage - Jacobs Ladder - Marx Generator - Lightning Pendulum - Flyback Fun Electronics Stuff - Velocity Indicator - Atomic Nixie Clock - IR Remote Module - Sharp GP2D12 Sensor Electricity & Magnetism - Mag&Elec 101 - Worlds Easiest Motor - Slow Motion Magnets - Galvanometer - L.E.D. Blinker - Electromagnet - Simple Speaker - Simple Oscilloscope - Simple Switch