[SEDXC] Musical Tesla Coils

[Tom W8JI]

Although that sounds like SSB or on-off keying, things like this are 
actually used for quality sound systems if linearized.

I actually have a design contract with a Japanese manufacturer to develop an 
AM transmitter to drive a plasma audio transducer. It is a tiny ball of 
corona in a horn. It runs on 27.120 MHz.

> Totally cool.
>
>
>
> http://www.youtube.com/watch?v=bbLshnfu0wY
> <http://www.youtube.com/watch?v=bbLshnfu0wY&feature=youtu.be>
> &feature=youtu.be
>
>
>
> 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.
>
>
> These coils were constructed by Eric Goodchild and Steven Caton.
>
>
> Eric Goodchild is currently an EE student at ASU Polytechnic.
>
>
> His personal website is:  <http://www.goodchildengineering.net/>
> http://www.goodchildengineering.net/
>
>
> Steven Caton is currently an EE student at UCLA
>
>
> His personal website is:  <http://stevencaton.com/> 
> http://stevencaton.com/
>
>
>
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