Sweet Home Alabama, Tesla coil style
Here’s a fun post for a Friday afternoon – Tesla coil style. Two EE students – Eric Goodchild and Steven Caton, at ASU Polytechnic and UCLA – have rigged this system in a Lynyrd Skynyrd tribute.
With a specific number of sparks generated per second, different tones can be produced by the coils, they say, by modulating the number of sparks that emit from the coil each second…
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.