Slayer exciter simple

So simple that it is wrong

It's not wrong. That is a slayer exciter. youre circuit is correct draco just ignore WTFCircuit. If you search slayer exciter or tesla coil on here, you'll find he comments on everyones circuits saying theyre wrong but say nothing specific, just that theyre bad. I guess he thinks that makes him look smart or something. Your circuit is fine. if you want you can add a small cap on the secondary and connect the other end to ground to make it run in the circuit sim. Dont add a cap in real life to the circuit, its just a way to make it work with every circuit. in reality it doesnt need it because the capacitance exist naturally. thanks for posting.

Good comment BIPfx because it’s kind and also instructive.