Re: Triggered gap-LOUD

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi All,

Question for the TSG'rs. Is your gap spacing a weee bit wide? I've been
playing with my
rq/tcbor version of the Metlicka TSG. On Saturday I had the total spacing
at about 7/16".
The gap wasn't that loud. Monday, I doubled the gap spacing and the gap was
"very" loud.
Spark length was "no better". This was just an observation.

I know the TSG allows wide spacing, but  I don't see wide spacing as
beneficial. The cap
will charge to what it can until the TSG triggers it, so I see the need to
open the gap up
slightly more than 120 bps to keep the trigger as the mechanism. Opening
the gap up
further serves no purpose in this set up except to ionize more air
(additional loss) when
the gap fires (maybe that's why it's so loud).

Just a thought,
Bart

Tesla list wrote:

> Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<ludev-at-videotron.ca>
>
> Hi Marc,
>
> I don't think the rubber could be used for measuring how much
> energy is dissipated in the gap. If we try to understand how
> energy is loss in the gap we can see that some is in the heating
> of the electrode some in the air from UV to IR, mostly IR, a
> little bit in RF and sound wave. Some of us roughly estimated the
> loss at 40 % but I think one point is of how the gap is design
> John Freau also noted that if you have more inductance in the
> primary for the same energy and frequency the loss were reduced.
>
> Not sure but I think John Couture, Terry and some other find
> practical way to measure how much energy is dissipated in a gap.
>
> My theory for why the trigger gap is so loud: may be it's because
> you have high conduction of the gap faster than in other gap
> design creating a shock wave, but this is only a theory, some
> could be able to verify it.....
>
> Cheers,
>
> Luc Benard
>
>
> Tesla list wrote:
> >
> > Original poster: "Metlicka Marc by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net>
> >
> >  I saw in
> > > Edmund scientific catalog I think 2 or 3 years ago a special
> > > rubber that convert sound wave energy in heat.
> >
> > Couldn't something like this be used to see how much energy is being
> > dissipated in the gap?
> > Marc
> >
> > >
> > > Cheers,
> > >
> > > Luc Benard
> > >
> > > snip
> > > >
> > > > Foam rubber packing with rough a surface like an egg carton is
about the
> > > > best sound absorber you can get. I used it to line my basement gun room
> > so I
> > > > could shoot 30-06 and 12 ga in my house in the winter with out
> bothering my
> > > > family with noise. It worked very well. I'm quite shure if it  will
> stop 06
> > > > noise it will supress a spark gap pop.
> > > >      Robert H

--
Barton B. Anderson
http://www.classictesla-dot-com