Re: dual 833A VTTC, problems

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

Original poster: "Dr.Resonance by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>


You can contact him direct at ewing7-at-rochester.rr-dot-com.   I bet he can help
you sort out the problem.  His dual 833C tubes uses the commercial graphite
plate tubes and his coil works great!

Dr. Resonance



----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, January 15, 2003 4:15 PM
Subject: Re: dual 833A VTTC, problems


 > Original poster: "Steven Ward by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<srward16-at-hotmail-dot-com>
 >
 > Hi D.C.
 >
 > Im running the plate chokes of equal turns on the plates.  I think its
just
 > the fact that the tubes are of different manufacturers.
 >
 > Does anyone know of a website with Ed Wingate's tube coil?  I havent seen
 > it on the web.  I know he does great work, so im sure its a nice coil.  I
 > think it was in one of Terry Blakes teslathon videos?  IT looked like a DC
 > powered coil.  The sparks were VERY straight, and looked to be quite
 > long.  MY arcs are fed with an AC doubler, so they look really nuts in
 > person!  Like a tree, with a scorching hot trunk;)  I think i will try the
 > tapped grid coil.
 >
 > Steve Ward.
 >
 >
 >
 >
 >
 >
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >To: tesla-at-pupman-dot-com
 > >Subject: Re: dual 833A VTTC, problems
 > >Date: Tue, 14 Jan 2003 21:24:21 -0700
 > >
 > >Original poster: "Dr.Resonance by way of Terry Fritz
 > ><teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>
 > >
 > >
 > >Are you running equalizing parasitic RF chokes on the plates?
 > >
 > >Also, you might check with Ed Wingate as he has an excellent dual 833
 > >circuit.
 > >
 > >Regards,
 > >
 > >Dr. Resonance
 > >
 > >
 > >
 > >----- Original Message -----
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >To: <tesla-at-pupman-dot-com>
 > >Sent: Tuesday, January 14, 2003 5:52 PM
 > >Subject: dual 833A VTTC, problems
 > >
 > >
 > > > Original poster: "Steven Ward by way of Terry Fritz
<teslalist-at-qwest-dot-net>"
 > ><srward16-at-hotmail-dot-com>
 > > >
 > > > Hi all,
 > > >
 > > > I have been working on my dual 833A VTTC project for a while now.  I
just
 > > > recently fired it up again (after blowing the power the first time a
month
 > > > ago or so) and keep happening upon the same problem.  The tubes are
not
 > > > matched, so one gets more red than the other.  Rather, one tube is
red,
 > >the
 > > > other dark (no redness).  I found that i originally had way too much
grid
 > > > feedback, so i cut it down quite a bit.  This made the sparks grow
from
 > > > about 10" to about 20".  But even 20" is pathetic for 2 of these tubes
:(.
 > > > Basically what is limiting me is that one tube is getting red, and the
 > > > other not, so i cant just let all of the stress fall on one tube.  So
i
 > > > have 2 ideas that i propose (I think John Freau actually may have told
me
 > > > these i ideas, i cant remember).  1, perhaps put a resistor in series
from
 > > > the red tube grid to the grid winding.  This would reduce the turn on
 > >pulse
 > > > from the grid coil, going into that tube.  2, make a grid coil tap,
and
 > >tap
 > > > the red tube at a lesser turn until i get them to go red at ~ the same
 > > > time.  This could be tricky, well actually, either way is tricky!
 > > >
 > > > So has anyone ever had this problem?  If so what was the solution?
 > >Also,
 > > > can anyone think of any other solutions?  And which of my proposed
 > > > solutions looks better?
 > > >
 > > > Also, a problem that i thought i would not ever have to worry about.
 > >Well
 > > > several small problems.  The parts are getting warm.  The primary coil
 > >gets
 > > > warm after about 30 sec, the 36A RMS doorknob cap array gets slightly
 > >warm!
 > > > the secondary base gets rather hot, and the discharge point may need
to be
 > > > replaced often, if i dont get tungsten :)  These arcs are white, hot,
and
 > > > thick!  So really this coil is becoming a in depth project, when it
comes
 > > > to all of the de-bugging(not nearly as bad as the other tube coils!).
And
 > > > of course, there is always the possibility of catastrophic faliure
when
 > > > running about 2+ KW in a 12"x18" area!
 > > >
 > > > Steve Ward.
 > > >
 > > >
 > > >
 >
 >
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