Musical Tesla Coils
Discussion
One of my ex-students just sent me this link on FB.
If only I could have had this for my lessons!!
http://www.youtube.com/watch?v=hgll-XTqcS4
If only I could have had this for my lessons!!
http://www.youtube.com/watch?v=hgll-XTqcS4
456mgt said:
Dumb question I know, but is it the Tesla coils that are generating the sound, or are they discharging in time with the music?
These coils use a 'pulse width modulation' of the supply voltage to control the discharge voltage and hence size of the arc. This PWM is at a realtively high fundamental frequency (~20KHz) and so this carrier frequency can be modulated with an audio signal. In effect, the discharge arc strength is proportional in frequency and voltage to the audio track. This means the arc effectively acts as a speaker (all be it, a pretty band width limited one)Max_Torque said:
These coils use a 'pulse width modulation' of the supply voltage to control the discharge voltage and hence size of the arc. This PWM is at a realtively high fundamental frequency (~20KHz) and so this carrier frequency can be modulated with an audio signal. In effect, the discharge arc strength is proportional in frequency and voltage to the audio track. This means the arc effectively acts as a speaker (all be it, a pretty band width limited one)
You might be interested in Googling "DuKan Ionovac" (or "Ionophane") which was a tweeter that used plasma, rather than a diaphragm, as the driven medium to create sound ...Zumbruk said:
I will raise you with this.http://www.youtube.com/watch?v=B1O2jcfOylU
omgus said:
I will raise you with this.
http://www.youtube.com/watch?v=B1O2jcfOylU
Naah.http://www.youtube.com/watch?v=B1O2jcfOylU
http://www.youtube.com/watch?v=F3knD7m0-pk
How is that different from disco lights, primitive coloured incandescent bulbs flashing in time to the bass or treble content of the music?
http://www.youtube.com/watch?v=kHhvRq9meMY
John
http://www.youtube.com/watch?v=kHhvRq9meMY
John
tapkaJohnD said:
How is that different from disco lights, primitive coloured incandescent bulbs flashing in time to the bass or treble content of the music?
http://www.youtube.com/watch?v=kHhvRq9meMY
John
It's different because they're not 'flashing in time to the music'. They are acting as speakers - the plasma arcs are creating the sound.http://www.youtube.com/watch?v=kHhvRq9meMY
John
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