Re: Triggered gap questions

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

Original poster: "bob golding by way of Terry Fritz <twftesla-at-qwest-dot-net>" <yubba-at-clara-dot-net>

Hi Luc,
        Very interesting article on 3 electrode gaps.I phoned Marconi  to
get a price some time ago. They START at 1500 dollars and go upwards. Also
and more important to coilers the max repetition rate is only 200 PPS. I
think they would overheat very rapidly in a Tesla coil tank circuit. I was
going to try and copy the design but ground to a halt trying to work out how
to seal the ends on. Heat,dissimilar materials,H2 to contain. I gave up at
that point,and went back to Frungals writings on the subject. Jim was doing
something with the Frungal design I seem to recall. Good luck.
cheers
bob golding


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, July 27, 2001 2:06 PM
Subject: Re: Triggered gap questions


> Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<ludev-at-videotron.ca>
>
> Hi Mike
>
> I have a paper that could interested you on my download site:
>
> http://homepage.mac-dot-com/ludev/
>
> When there open the folder "Tesla" and download the document
> "3elec_sg.pdf" It's really interesting and I'll try to base my
> future trigger gap in this concept ( the trigger electrode out of
> the way of the 2 main electrodes ).
>
> Cheers,
>
> Luc Benard
>
> Tesla list wrote:
> >
> > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Hollmike-at-aol-dot-com>
> >
> > Ok,  Here's a question for the triggered gap gurus:
> >     I have been reading this thread with much interest.  It sounds like
a
> > great alternative to the SRSG!    One thing I read is that the primary
> > current passes 'through' the trigger electrode.  My question is, could
the
> > trigger electrode be positioned slightly out of alignment with the
primary
> > gap electrodes so the triggered arc would have to take a slightly 'bent'
> > path?  This, if so, would seem to me to help alleviate heating and/or
> > corrosion of the trigger electrode.
> >    It would seem that the trigger electrode could be made into a sharp
point
> > and cause the ionization of the space between the gap electrodes
>
> I'll try a flyback circuit too, because may be the RF corona from
> it could be sufficient to trigger the gap ????
>
>
>
>  to provide
> > the conductive channel to form more easily and not actually have the
primary
> > current contact the trigger electrode at all(or very little anyway).
If the
> > trigger electrode were positioned from below the primary gap electrodes,
the
> > heat might also help 'move' the arc away from the trigger electrode.
> >  The first objection to this idea, I imagine, is that might argue that
this
> > would effectively make the gap too wide and kill a NST, but if one
placed
> > another gap or two in series, the triggered gap could have a large
percentage
> > length change, but the overall gap length would not change by much.
Having
> > the series gaps would also seem to aid quenching as well.
> > Comments?
> > Mike
> >
> >
>
>
>
>
>