Connecting a function generator to a Tesla coil speaker

Thread Starter

Rony234

Joined Feb 10, 2020
4
Hello All,

I need to produce high voltage (20kV-50kV) pulses in the frequency range of 100Hz-1MHz for a gas plasma processing test.
I have access to regular laboratory grade function generator. I came across the Tesla Coil speaker which seems to me that produces pulsed arcs as per the audio signal. I assume the audio signal is wave signal and thought maybe a function generator signal could be fed to the same port and high voltage arc with frequency assigned by function generator could be produced.

Is this feasible? or Tesla coil circuit is tailored around audible frequency range only?

If not is there any cost effective option for this?

Thanks very much for the input.
 

LowQCab

Joined Nov 6, 2012
55
This could be fairly easy to accomplish with a big power audio amplifier.
It's going to depend on the Primary Impedance of your Tesla Coil.
But one way to accomplish this is to use a 4 Ohm power resistor on the
output of a ~100 to ~200 watt audio amplifier connected directly to your Tesla Coil.
This will protect the power amp to a reasonable degree.
This project is just a demonstration gimmick,
as the amount of NOISE that comes with the Tesla Coil's Arc is just ridiculous.
But yes, you CAN hear the audio, along with the crackling.
 

Thread Starter

Rony234

Joined Feb 10, 2020
4
This could be fairly easy to accomplish with a big power audio amplifier.
It's going to depend on the Primary Impedance of your Tesla Coil.
But one way to accomplish this is to use a 4 Ohm power resistor on the
output of a ~100 to ~200 watt audio amplifier connected directly to your Tesla Coil.
This will protect the power amp to a reasonable degree.
This project is just a demonstration gimmick,
as the amount of NOISE that comes with the Tesla Coil's Arc is just ridiculous.
But yes, you CAN hear the audio, along with the crackling.
thanks for reply.
Sorry if I was not clear in the question description. I do not intend to amplify any audio signal rather higher frequency (upto 1MHz) produced by a function generator
 

Thread Starter

Rony234

Joined Feb 10, 2020
4
Did you see this? https://en.wikipedia.org/wiki/Singing_Tesla_coil

You don't say how fast you need a circuit or Tesla coil, but the solid state coils are much harder to make than the old analog type and they take a while to get working.

http://www.tonyvanroon.com/oldwebsite/circ/hv/ss-tesla/ss-tesla.html
https://www.loneoceans.com/labs/sstc2/
http://donklipstein.com/sst.html
https://www.stevehv.4hv.org/SSTCindex.htm
thanks for the reply, appreciated; I did not know about solid state Tesla coil.
I, however, could not find any input for a signal with arbitrary frequency as input to be amplified
 

shortbus

Joined Sep 30, 2009
7,906

Thread Starter

Rony234

Joined Feb 10, 2020
4
Not really sure what your after or doing so I'm guessing. Can you give more of a description of the final project?

https://avs.scitation.org/doi/abs/10.1116/1.587352?journalCode=jvn
https://www.ncbi.nlm.nih.gov/pubmed/26521006
https://www.ceeri.res.in/technologies/development-of-50kv-10apk-pulse-power-supply-for-5-ghz-klystron/

Or if you could find a way of switching at that volage level a metal cutting plasma torch?
these papers were actually very useful, thanks very mcuh
 
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