Sly's Website of the Week for April 4, 2012
Far too technical for my pea brain, so I'll just let the YouTube description speak for itself.
House of The Rising Sun played on Steve Caton's and Eric Goodchild's (me) 7 foot tall Musical Tesla Coils.
This was the first time the coils have ever been run together. It was a marvelous first test.
These are two gigantic solid state musical Tesla Coils. A Tesla Coil is a special type of transformer invented by Nikola Tesla that is able to generating extremely large voltages using a phenomenon known as electrical resonance. Each coil in this video is capable of generating a 13 foot spark. This equates to about 500,000 volts of electricity.
The primary drive system for the coils consists of high power semiconductors arranged into an H-Bridge switching configuration. During a spark event, the coil is pulsed on for a few hundred millionths of a second. During this short time, thousands of amps circulate within the primary tank circuit and the energy is coupled into the secondary resonator through magnetism.
So what appears to be a continuous burst of sparks is actually a specific number of sparks generated per second. By modulating the number of sparks that emit from the coil each second, different tones can be produced by the coils.
I may not understand technically, but I do understand that it's very cool and for that, it's my pick for Website of the Week this week. ;-)