Re: Streamer Noise ? ? ? What causes the noise???

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Captain,

I have a SSTC driven by a 350kHz fancy plasma generator that produces a 
sine wave with harmonics like 50 dB down.  Oddly, it does not produce an 
ozone smell at all, which I attribute to it's ability to provide a harmonic 
free and balanced signal to the output discharge.

Is it "silent"?  No!  Not at all.  Although not "loud", it sounds much like 
a common propane torch when running.  You just can't cook air without 
making at least a little noise ;-))

Let me know if you need more details...

Cheers,

         Terry


At 09:19 PM 9/30/2003, you wrote:
>Sure, we know that electric arc noise is caused by the rapid increase in
>temperature of surrounding air and the inherent shock waves created by this
>expansion, but what is it about spark gap type
>coils that makes the streamers so loud, whereas arcs from a VTTC or SSTC can
>be completely silent?    (I'm not talking about the spark gap either.  Lets
>assume the spark gap is completely sound
>insulated)  Is is the transient - intermittent peak power nature of the
>spark gap coils???  Does that mean a continous streamer would be comletely
>silent???
>
>The Captain