Re: [TCML] Tube coils structure

["Phillip Slawinski" <pslawinski@xxxxxxxxx>]

Very interesting, I know Steve Ward tried a dual A coil and his tubes were
unmatched.  If I recall correctly that did not go so well for him.  Is it
working any better for you?  Are you sure the tubes are splitting the load
equally?

On Wed, Oct 8, 2008 at 21:21, David Rieben <drieben@xxxxxxxxxxx> wrote:

> Hi John,
>
> I now only have a single 833(C) and a single 833(A).
> I have temporarily lashed the 833A in parallel with the
> 833C (you know I'm gonna use the C tube if I have a
> choice ;^) just to see how well the extra tube would
> share the load. It does indeed "spread the load". I am
> assuming that a "push-pull" setup means the tubes are
> wired in series rather than parallel?
>
> --
> David Rieben
>
> -------------- Original message --------------
> From: futuret@xxxxxxx
>
> > Jim,
> >
> > I built a tube coil that gave 36" sparks and used (4) 833A tubes.
> > It drew about 5600 watts or so without staccato. Actually
> > I got the spark up to about 40" one time, but that's when
> > a large tube arc occured and damaged a tube. I used a 5kVA
> > pole pig to power the coil. This VTTC was not push-pull,
> > but had all the tubes in parallel. I never tried the single large
> > tube concept for comparison, so I can't comment on that.
> >
> > http://futuret.110mb.com
> >
> > John
> > -------------
> >
> >
> > -----Original Message-----
> > From: Jim Mora
> > To: 'Tesla Coil Mailing List'
> > Sent: Wed, 8 Oct 2008 7:16 pm
> > Subject: [TCML] Tube coils structure
> >
> >
> >
> > Hi All,
> >
> >
> >
> > It has been recently stated that one serious transmitter tube is better
> > than
> > multiple lesser tubes say (4) 833a's. I can see the benefits but then
> > again
> > all eggs are in one basket. Has anyone built a push pull quad 833a
> > coil? The
> > plate transformer becomes an issue; but, a 5+kv pig should easily do.
> > What
> > say you? Should I look for a mongo transmitter triode (which I thought a
> > 833a was). I have 40 amps worth of 10volt filament transformers.
> >
> >
> >
> > This is down the line for me, though I'm curious what the collective
> > list
> > thinks.
> >
> >
> >
> > Thanks,
> >
> > Jim Mora
> >
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