Here's the classic circuit im using:
It's made to create high voltage AC from DC.
I've killed a few transistors with overvoltage using this circuit and because of that im considering using a mosfet to take the higher power and maybe get better performance. Before i go out and buy a mosfet, would this even work?

I've killed a few transistors with overvoltage using this circuit and because of that im considering using a mosfet to take the higher power and maybe get better performance. Before i go out and buy a mosfet, would this even work?