Tesla coils are one of those builds that capture the interest of almost anybody passing by. For the naïve constructor, they look simple enough, but they can be finicky beasts—beasts that can ...

but it demonstrates the core principles of a solid-state Tesla coil. With basic components like a transistor, LED, resistors, and wire, you’ll be able to transmit power wirelessly using Lego.

The primary side of a Tesla coil is usually a handful of turns of thick wire to handle the current without melting. This build runs at two or three amps, giving a primary power of around 150 Watts.