In this article, we explained the design process of a mini Tesla coil, covering its components, circuit details, PCB design, ...

But this DIY Tesla coil build might just manage to deliver on all three. Cheap? [Jay Bowles]’ Tesla coil is based on a handheld bug zapper that you can find for a couple of bucks, or borrow ...

In this case, it was a little Tesla coil that made decent sized arcs but wasn’t quite good enough. The result was a super-sized solid state Tesla coil with better results and room to grow.