Re: performance/tuning question

["Barton B. Anderson" <tesla123-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Hi Garth,

If it's a lot louder, there is a difference occurring, even though spark length
isn't increasing. Did it descrease? Is the gap perhaps firing a little
erratically? The cap sizes would be nice to know.

On the 3rd of July (getting ready for the 4th), I ran both 40nF and 60nF and
there was a longer spark length achieved with the larger cap size (about a
foot). Of course I'm using a pole pig and have ample current.

Bart

Tesla list wrote:

> Original poster: "Garth van Sittert" <garth-at-mediasupplies.co.za>
>
> I have just tried it to do that about an hour ago with my 12kV 30ma NST.
> Didn't make any difference, just alot louder.
>
> ----- Original Message -----
> From: Tesla list <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Wednesday, July 26, 2000 8:44 PM
> Subject: Re: performance/tuning question
>
> > Original poster: Esondrmn-at-aol-dot-com
> >
> > In a message dated 7/25/00 2:20:36 PM Pacific Daylight Time,
> tesla-at-pupman-dot-com
> > writes:
> >
> > << Hello,
> >
> >  I was wondering, if I was to build a TC with the tank cap double or
> triple
> >  the value derived from the formula used to match it with the impedance of
> >  the power supply (say .01ufd or .015ufd instead of the matched value of
> >  .005ufd) and decreased the primaries inductance appropriately so that the
> >  primary and secondary would both resonate at the same frequency.  What
> >  affect would that have on the system and output compared to starting with
> >  the cap matched to the power supplies impedance.  Has anyone done this
> and
> >  would this have much affect on the streamer length and "look" (whiter but
> >  less smooth, etc.)?   BTW this would be in a rotary gap setup if that
> made a
> >  difference.
> >
> >  Thanks experienced ones,
> >  John M.
> >   >>
> > John,
> >
> > It depends on the power supply.  If for instance, you are using a 12 kv,
> 30
> > ma transformer and then double or triple the size of the primary
> capacitor,
> > the coil will probably perform poorly because the transformer cannot
> supply
> > enough current to charge the new larger cap up to full voltage.  If you
> are
> > using a supply that can supply a few hundred ma, the coil will perform
> much
> > better.  The average power going into the system will be higher and the
> > streamers will be larger.  This assumes retuning and that the secondary
> can
> > handle the increased power levels.
> >
> > Ed Sonderman
> >
> >
> >
> >