The idea with Tesla coils is that the secondary circuit forms a resonant circuit with the ‘top load’, usually some hollow metal can. This forms an LC circuit with a corresponding resonant ...

Unlike most Tesla coils, [Teodor]’s design is able to run ... The most critical component of his circuit, the relay, is just a standard normally-closed relay that is rated at 20A.

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