I love that!! The art is in the mosfet! Sometimes known at the "Singing Arc", it makes its noise in changing the field pressure! I love it!!

I studied that a few years back, need to jog my memory a bit on the details of how it all works again!!

Plasma Speaker / Singing Arc - Early Modulated Proto... Home Brew versions with TV Flybacks

And I know just who I'd like standing in the middle.

I want to program my parents house to the MSU Bobcat Fight song!