Author Topic: spectral analysis of Tesla coils  (Read 704 times)

Offline Physikfan

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spectral analysis of Tesla coils
« on: December 15, 2018, 02:24:20 PM »
Hello Tesla friends

I have two questions:
1. Has anyone done an electromagnetic spectral analysis of Tesla coils in operation?
2. Has anyone determined the self-resonances of Tesla coils in the off state, perhaps with shorted spark gaps?

Just before Christmas, two atmospheric Tesla discharges:


« Last Edit: December 15, 2018, 02:29:43 PM by Physikfan »

Offline Uspring

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Re: spectral analysis of Tesla coils
« Reply #1 on: December 17, 2018, 01:02:35 PM »
Quote
1. Has anyone done an electromagnetic spectral analysis of Tesla coils in operation?

Are you reffering to optical spectra? That'd indeed be interesting. I believe the tip of an arc to have a more line type spectrum as in dilute gas discharges. Nearer to the breakout point, that would be more like a thermal spectrum due to the higher temperatures.

Quote
2. Has anyone determined the self-resonances of Tesla coils in the off state, perhaps with shorted spark gaps?

Probably many have done that, myself included. That eases tuning.

Offline Mads Barnkob

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Re: spectral analysis of Tesla coils
« Reply #2 on: December 17, 2018, 02:20:01 PM »
Quote
2. Has anyone determined the self-resonances of Tesla coils in the off state, perhaps with shorted spark gaps?

Probably many have done that, myself included. That eases tuning.

I did it with a simulated branched spark formed from a thin copper wire with some 6-8 branches, to give a idea of the resonance changes from a load vs. no load conditions: https://highvoltageforum.net/index.php?topic=24.msg112#msg112
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

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Re: spectral analysis of Tesla coils
« Reply #2 on: December 17, 2018, 02:20:01 PM »

 


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