The idea with Tesla coils is that the secondary circuit forms a resonant circuit with the ‘top load’, usually some hollow metal can.

[Teodor] writes in with a unique Tesla coil he designed and built. Unlike most Tesla coils, [Teodor]’s design is able to run with a fairly low input voltage because it doesn’t use a static ...

Learn how to build a Tesla coil using inexpensive high-voltage generators and Lego, creating stunning plasma arcs without complex circuits. This Lego Technic MOC includes the primary coil ...