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tesla coil music? Answered

Ok.... if this is legit, how did they do it?


(they shoulda played the bars from Close Encounters Of The Third Kind) hahaha.


Technically, it is very simple. Just hook up some speakers to whatever is playing it, and then tap into the line of one. Run it through an IC to change the voltage depending on pitch, and put it on some HV transistors. The transistors hook up to the line going into the tesla coil. There you have it. It's the same principal as sound activated plasma globes. I have done it to one of my small coils before.

OMG OMG I want one, the mario part was sweet

. Cool! . I'll guess that they are modulating the power to the coil with an audio tone (sounds like a square or triangle form to me), like AM radio.