Twin Solid State Musical Tesla Coils Out of Phase

Twin Solid State Musical Tesla coils constructed by Steve Ward and Jeff Larson. The Tesla coils stand 7 feet tall and are each capable of putting out over 12 foot of spark in calm air. The sound pressure level is well over 110dB. The coils are powered by 240 volts and can draw over 40 amps each. In this particular run they are being tested in a 180 degree out of phase operation. This creates the maximum voltage potential between the 2 coils and causes them to arc to each other. The coils are controlled by a microprocessor alone and not a laptop as when playing music through the sparks, but still sending out trigger pulses over a fiber optic link. As you can see in the foreground the grass and other objects being moved around by the gusty wind. The sparks also are affected by the wind mainly reducing the spark length. You can see the spark moving around rather quickly at times.

Category:

Entertainment

Tags:

• Twin
• Solid
• State
• Musical
• Tesla
• Coils
• Out
• of
• Phase
• Zeusaphone

[gizmoguyar]

I'm trying to wrap my head around this. Is this correct? The coils run at a very high freq. which we can't hear, near 200,000 Hz. Then using the SS electronics you are (maybe by limiting the input current and thus the capacitor charge time) changing the time in between "discharges" to 200 - 800 HZ which produces the tonal frequency that we hear. And then you are also turning the entire coil on and off to produce the very low or sub audible frequencies, or for music to produce individual notes?

[megavoltmeister]

@gizmoguyar You are on the right track. Each coil is an oscillator that operates at 47,000 Hz. It requires a pulse signal to start oscillating. The length of the pulse also determines the amount of time the coil is oscillating. That time some what determines the spark length and power. Each time a coil is triggered, a pop sound is produced. If you do that 60 times a second you get a buzz sound that has a pitch of 60 Hz. So to make specific notes, trigger freq is the as the note you want

[99rhetbaboons]

How do you know something is 180 degrees out of phase? Please don't hit me.

[megavoltmeister]

When the sparks hook up between the two coils, the phase is 180 degrees different when comparing the 2 signals. The current draw also drops way down do to energy exchange between the coils.

[skidbone]

should be a new home intruder system, one flick and the coils cook em

[ryuhinomaru]

then youll know it works

[blackman2101]

these things would make a fiiiillllthyyyyy bassline

[TheAlienskum]

lol star wars shit goin on right there

[killweb2]

i wonder what would happen if you were struck by both... KA-BOOM

[7777dmith7777]

I NEED ONE...............BAD.....

[AlbusNL]

Satisfaction.. satisfaction..

[JPRubber2]

Heh, I just HAVE to find out if my father-in-law IS! I would love to se this in person...