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Re: [TCML] GU5B VTTC
I have to make some new modifications:
-rebuilding the source
-increasing the primary cap (now is 1.46 nF, I would go for 2 nF) and lowering the primary turns
-lowering the gauge (AWG) of primary wire to decrease the primary resistence
-a new movable feedback (still afraid for arcs between secondary and the tickler coil, thats why I used the bottom position). I will make it tapable , with insulated wire, but on a larger form than the primary to prevent the possible breakdown. I know that the copling would be lowered, but having tapable turns I can variate this parameter.
teslina
>
>
--- On Sun, 8/23/09, futuret@xxxxxxx <futuret@xxxxxxx> wrote:
> From: futuret@xxxxxxx <futuret@xxxxxxx>
> Subject: Re: [TCML] GU5B VTTC
> To: tesla@xxxxxxxxxx
> Date: Sunday, August 23, 2009, 11:35 PM
> Teslina,
>
> Yes, you have excellent results now with the staccato and
> more power.
> A big question in VTTC work is exactly what factors
> contribute to
> sword sparks vs. branched sparks. I noticed your
> sparks occasionally
> form the single sword spark. Usually there's some
> branching in your
> sparks
> in this video. Both ways are nice effects. I
> know some of the
> factors that produce this branching, but not all.
> Research continues.
>
> Cheers,
> John
>
>
> -----Original Message-----
> From: Brian <ka1bbg@xxxxxxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Sent: Sat, Aug 22, 2009 8:22 pm
> Subject: Re: [TCML] GU5B VTTC
>
>
> Hi, considering you lack of supplies and parts, very nicely
>
> done...brian f.
> ----- Original Message ----- From: "Liviu Vasiliu" <teslina@xxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Saturday, August 22, 2009 4:25 PM
> Subject: Re: [TCML] GU5B VTTC
>
> > Hi list
> >
> > I added a staccato controler to my VTTC and 2 more
> MOTs on my source
> > (that's 6 little MOTs in serie-parallel).
> >
> > The second light was very satisfying:
> >
> > http://www.youtube.com/watch?v=1rJISBSHMxk&feature=channel_page ;
> >
> > Re-tuning for streamer loading gave much better
> sparks, up to 80 cm:
> >
> > http://www.youtube.com/watch?v=1hRnoLVFsEw&feature=channel_page ;
> >
> > The power cord is hot after short runs even at such
> low pulse rate,
> but I > think t
> hat this tube would give much better sparks powered by
> an > appropriate plate transformer (too pity that I have
> none, even
> more MOTs). > I enjoyed to work on this project.
> >
> > Best regards
> >
> > teslina
> >>
> >>
> >
> > --- On Sun, 7/26/09, futuret@xxxxxxx
> <futuret@xxxxxxx>
> wrote:
> >
> >> From: futuret@xxxxxxx
> <futuret@xxxxxxx>
> >> Subject: Re: [TCML] GU5B VTTC
> >> To: tesla@xxxxxxxxxx
> >> Date: Sunday, July 26, 2009, 6:06 AM
> >> Hi Teslina,
> >>
> >> Excellent job and results !
> >>
> >> Most variacs here in the US anyway can handle a
> lot more
> >> than their rated power for short runs. I've run
> 150
> >> amps
> >> through a 22 amp variac, but only for a second or
> less
> >> while
> >> I was tuning up a system :) I
> >> turned it up, then right
> >> back down as quickly as I could !
> >>
> >> Cheers,
> >> John
> >>
> >>
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: Liviu Vasiliu <teslina@xxxxxxxxx>
> >> To: tesla@xxxxxxxxxx
> >> Sent: Sat, Jul 25, 2009 3:00 pm
> >> Subject: [TCML] GU5B VTTC
> >>
> >>
> >>
> >> Hi list
> >>
> >> I had the first light for my new VTTC with a GU5B
> tube (had
> >> a little vacation to
> >> spare for this old project finally).
> >> The construction is documented with pics on the
> 4HV fo
> rum
> >> here:
> >>
> >> http://4hv.org/e107_plugins/forum/forum_viewtopic.php?72084 ;
> >>
> >> First light: 60 cm sparks to a grounded rod.
> >>
> >> http://www.youtube.com/watch?v=wUbfZzKTpiw&feature=channel_page ;
> >>
> >> Still using 2200 V weak MOTs in my doubler. I will
> try to
> >> find higher voltage
> >> output ones (2500 V), this will give at least 4-5
> inches
> >> more in the spark
> >> lenght.
> >>
> >> This old russian stuff is simple great.
> >>
> >> teslina
> >> >
> >> >
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> Tesla mailing list
> >> Tesla@xxxxxxxxxxxxxx
> >> http://www.pupman.com/mailman/listinfo/tesla ;
> >>
> >> _______________________________________________
> >> Tesla mailing list
> >> Tesla@xxxxxxxxxxxxxx
> >> http://www.pupman.com/mailman/listinfo/tesla ;
> >>
> >
> >
> >
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla ;
> >
> _______________________________________________
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