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Re: VTTC - audio modulation

Original poster: "David Trimmell by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davidt-at-pond-dot-net>

Hi Marc, Actually Dunkan would be the one to ask, as he's done the Q&D VTTC 
using Haumann's design. I have played with the thought of using a 803, though.


David Trimmell

At 06:47 PM 5/21/01, you wrote:
>Original poster: "Metlicka Marc by way of Terry Fritz 
><twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net>
>maybe you have saved me some headaches with this post because i was
>setting up to use my pair of 813's in my attempt at the Q+D tesla
>project. i have a pair of vt-127A's, do you think they would be better?
>they would definitely make a strange "LOOKING" setup, of coarse strange
>looking is me! how about some 4-125A\4D21's? could one put the feedback
>loop more towards the center of the big tubes?
>thanks for the help,
>marc m.
>geek #1055 (and proud to be)
>Tesla list wrote:
> >
> > Original poster: "David Trimmell by way of Terry Fritz
><twftesla-at-qwest-dot-net>" <davidt-at-pond-dot-net>
> >
> > Hi, just a quick note, but his web page changed to:
> > http://members.aol-dot-com/uhaumann/
> >
> > Regards,
> >
> > David Trimmell
> >
> > At 04:41 PM 5/19/01, you wrote:
> > > >> Possibly a interesting idea would be to take Ulrich Haumann's
> > > >(sp?) design to a more powerful tube
> > > >- Do you happen to know the URL?
> > >
> > >
> > >http://members.aol-dot-com/uhaumann2/plasma/eplasma.htm
> > >
> > >Careful with this one.  The plasma is live to HT positive, and the
> > >main problem with a big bottle is going to be coupling the top of the
> > >TC to the grid feedback loop without getting strikes to it and blowing
> > >the grid coupling cap !!!  Full plate HT on the grid is not
> > >recommended :-)  This, and this alone, has so far dissuaded me from
> > >trying it with a pair of 813s.