Re: spark gap noise suppression

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Mike <megavolts61@xxxxxxxxx>

I haven't ever checked the temperature that a spark gap can get up 
to, but enclosing it might degrade performance unless some provision 
for cooling it is made.   I'm also thinking that even glass 
insulation could melt from high temperatures.   You may wish to find 
some ceramic wool (or felt) insulation.
<http://www.mcneilusa.com/fiberfrax.html>http://www.mcneilusa.com/fiberfrax.html
Mike


Original poster: "Todd Reeve" <todd.reeve@xxxxxxxxxxxx>

That's exactly what I was thinking.  Well, I'll give 'er a go and
post my results.

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, January 28, 2007 4:15 PM
Subject: Re: spark gap noise suppression


>Original poster: <davep@xxxxxxxx>
>
>
> > Has anyone ever tried to make things a little quieter when running
your
> > coil?
>      This was standard problem/issue in early wireless stations.
>
> > I was looking at the muffler on my central vacuum unit and it has a
> > muffler that quiets the unit by about 50%.  Borrowing from that
idea,  I
> > was thinking about building a box lined with some type of foam with
> > openings on each end.
>      Commonly, in the old days, the gap was enlosed for sound
>      suppression, especially when high poweres were used.
>      Sometimes 'in its own room'.
>
>      A point to Ponder is that many sorts of foam are Highly
>      Flammable.  (cf the Station Night Club fire.)  I'd be
>      real careful, in picking.  Perhaps 'fiberglass insulation'?
>
>     best
>      dwp


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