Episode 103 Tech Talk-Tesla Coil / Faraday cage

This week on episode 103, Tim discusses taking the kids on #AdventureTimeTuesday to QuarterWorld to see a Singing Tesla Coil inside a Faraday Cage.

But what the heck is that? Well, its actually easier to show you:

For those of you requiring more explanation, a Tesla coil is an electrical resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity.


singing Tesla coil is sometimes called a zeusaphone, thoramin or musical lightning, is a form of plasma speaker. It is a variation of a solid state Tesla coil that has been modified to produce musical tones by modulating its spark output. The resulting pitch is a low fidelity square wave like sound reminiscent of an analog synthesizer.

The coil is contained in a Faraday cage, which is an enclosure used in order to block electric fields. It is formed by conductive material or by a mesh of such materials. Faraday cages are named after the English scientist Michael Faraday, who invented them in 1836.

A Faraday cage operates because an external electrical field causes the electric charges within the cage’s conducting material to be distributed such that they cancel the field’s effect in the cage’s interior.

If you’re ever in Portland, Oregon on a Tuesday or Sunday, check out the coil live at 4pm and 9pm(8:30 Sunday) at QuarterWorld, it’s awesome! They even provide ear protection!