Ignition coil power supplies are easy to make, and quite versatile. However, they are a little delicate, and care is needed unless you want a pile of dead ICs like I have. Miswiring or adding to much capacitance will instantly blow the transformer. I have used the PSU shown below for such varied projects as Tesla coils, Marx generators, voltage multipliers, triggered spark gaps and shocking that pesky raccoon that breaks into the house and eats all the dog food in the middle of the night starting a ruckus! Oddly enough, he doesn't come around much any more.          Output voltage of the IC depends on input voltage of course, but also load makes a big difference. Load can be somewhat compensated for by adding more capacitance to the system, but too much capacitance will blow the transformer. Increasing the capcitance also increases the maximum current output. I use between 2uf (which you could run forever I think) to 10uf (which you should limit to shorter runs). You can push it a little more, but beware of letting the smoke out! The capacitors used should be motor RUN caps, not to be confused with motor START caps. Back to INDEX. 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