Tesla coils are beautiful examples of high voltage hardware, throwing sparks and teaching us about all kinds of fancy phenomena. They can also be quite intimidating to build. [William Fraser], howe… ...

Small Tesla coil designed for use by medical profession, 1897 Visit Life and Legacy to get the full story behind the Tesla coil. View Tesla coil patent 454,622 .

He’s also collaborating with Tesla coil performance artist Austin Richards of Santa Barbara (a.k.a. “Dr. MegaVolt”) on a two-story, 120,000-watt sculpture equipped with a ladder for people ...

Tesla coils do the same thing, but with a much more dramatic change in voltage. First, they employ a pre-made high voltage iron core transformer to go from 120V wall current to roughly 10,000V.

How Tesla coils generate high-voltage electrical fields. (Image credit: by Ross Toro, Infographics Artist) How it works. The power source is hooked up to the primary coil.