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.

[Zach Armstrong] presents for your viewing pleasure a simple guide to building a solid-state Tesla coil. The design is based around a self-resonant setup using the UCC2742x gate driver IC, which is… ...

Tesla's largest coil, built at his Colorado Springs lab in 1899, was 52 feet in diameter and generated pulses as high as 12Mv. This invention was patented as part of a high-frequency lighting system.

Researchers subsequently created a Tesla jammer 2 made of conducting wire, battery, switch, resistor, capacitor and two-stage coil (Fig. 2). 2.