Trying to simulate it with BJT's resulted in a very feeble coil with output voltages no more than 5kV. I mean 5kV could do some pretty amazing sparks in a neon environment, but to spark across air, you'd need a bit more voltage. So this is what I got. There seem to be some very nasty spikes though, and a specific type of Mosfet should be used - a very high voltage one. 1.5kV VGS should be enough. All the stuff around it is gate protection.
