Re: VTTC - audio modulation

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

Original poster: "Metlicka Marc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net>

david,
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.