and because Tesla coils are simply cooler that way, he had it playing music as an impromptu MIDI-driven plasma-ball lousdpeaker. Now he’s been able to write up the project we can take a closer ...

This Lego Technic MOC includes the primary coil, secondary coil, spark gap, and switch, all built with Lego. Powered by just 6 volts, the output is surprisingly powerful, with plasma arcs reaching ...

Instead the top of the coil ends in a point, from which in the perfect speaker a ball of plasma replaces the Tesla’s impressive sparks. In this case the pentode is joined by a high-voltage TV ...