Re: Triggered spark gaps for coils

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

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

hi Duncan, all,
    I checked the price of the Marconi gaps just for general interest and
to give some ideas for
people thinking of making there own. The  GTX 30B is a mere 1750 dollars
each in one off's. Didn't ask
about bulk discounts. ;-)) It looks as if making your own or using a ss
system is the way to go. Don't
throw those RSG's away just yet. I think Jim's idea of using an air blast
system sounds the most
practical. I am reading Fruenel's book at the moment... Sealing the ceramic
to the metal end plates
seems to be the most difficult, Anyone got any pointers to info on the type
of ceramics and the
methods used to connect the two?

cheers

bob golding

Tesla list wrote:

> Original poster: "Dr. Duncan Cadd by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <dunckx-at-freeuk-dot-com>
>
> Hi Gary, All!
>
> All manner of possibilities:
>
> http://www.magnavolt-dot-com/pulse.htm
>
> http://www.samtech.co.uk/
>
> http://home.san.rr-dot-com/nessengr/links.html
>
> http://www.marconitech-dot-com/sparkgap/
>
> The Magnavolt and Samtech pages show cooled gaps for high rep rate
> (SF6 filling and water cooling coils).  The Ness Engineering page has
> some excellent pulse links and the Marconi page . . . well, Marconi
> was playing with spark gaps a fair while ago.  Nice to see his company
> in Chelmsford still in business making them.  They've come a fair way
> since quenched gaps for 1,5kW spark transmitters :-)
>
> There are two neat pdf files ("preambles" - 2elec_sg.pdf and
> 3elec_sg.pdf) on the Marconi page for two electrode and three
> electrode gaps.  Also a load of pdf files for each type of gap.  Of
> the three electrode gaps, the GXG and GXT seem most suitable from what
> they say regarding laser applications at 100+pps.  Note the lifetime
> is related to the amount of charge transferred and that this is not
> equal to the capacitor charge CV, but the integrated area under the
> damped oscillation curve, i.e. good quenching makes a difference.
>
> I can't help wondering what they cost!  Next thing you know we'll be
> doing bulk spark gap buying ;-)
>
> Dunckx