Re: triggered gap performance?

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

Original poster: "Peter Lawrence by way of Terry Fritz <teslalist-at-qwest-dot-net>" <Peter.Lawrence-at-Sun.COM>

Colin,
       my tungsten-carbide gap has four gaps, I also have some parts for a
one-gap gap but have not put it together yet...  I have heard that a single
is better than multiple if you have tungsten or tungsten-carbide, but have
not tried it yet. Multi-gaps may require less often cleaning so if you are
using copper/brass/stainless a multi may require less maintenance, but I'm
not sure if there is any other performance reason for single verses multi.
Perhaps someone else on the list can shed some light on this.

-Pete Lawrence.


(ps, tungsten-carbide at high power probably has the same problem that the
90% tungsten 6% nickel 4% copper "tungsten" EDM rod has, it usually has a
cobalt binder that will evaporate and erode quicker than pure tungsten,
but at these low powers (6~9kv) mine are holding up fine).



 >
 >Original poster: "colin.heath4 by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<colin.heath4-at-ntlworld-dot-com>
 >
 >hi pete,
 >             thanks for the info. i was going to build a lash up static gap
 >to tune first. but now ill put my effort into that.
 >how many gaps do you use? i was thinking of four or five!
 >cheers
 >colin
 >----- Original Message -----
 >From: Tesla list <tesla-at-pupman-dot-com>
 >To: <tesla-at-pupman-dot-com>
 >Sent: Tuesday, July 15, 2003 7:44 PM
 >Subject: Re: triggered gap performance?
 >
 >
 > > Original poster: "Peter Lawrence by way of Terry Fritz
 ><teslalist-at-qwest-dot-net>" <Peter.Lawrence-at-Sun.COM>
 > >
 > > Colin,
 > >        I too have been building "small" TCs (6kv, 7.5kv, and 9kv NST
 >supplied).
 > > at these low powers a static gap works just fine. I have built a rotary
 >gap
 > > but don't seen any advantage at these low power levels.
 > >
 > > tungsten or tungsten-carbide will make the gap last (essentially
 >indefinately
 > > at these powers) and not require periodic cleaning (copper, brass,
 >stainless-
 > > steel all do).
 > >
 > > a fan to blow the gap will make the most difference. I use a squirrel-cage
 > > fan from an old microwave oven.
 > >
 > > -Pete Lawrence.
 > >
 > >
 > >
 > >  > >
 > >  > >  > Original poster: "colin.heath4 by way of Terry Fritz
 > >  > > <teslalist-at-qwest-dot-net>" <colin.heath4-at-ntlworld-dot-com>
 > >  > >  >
 > >  > >  > hi all,
 > >  > >  >          im building a small coil. 2" secondary run off a 7.5KV
 >30mA
 > >  > >  > transfomer!
 > >  > >  > my question is will a sync triggered gap match the performance of
 >a
 > >  >rotary
 > >  > >  > gap at these low powers?
 > >  > >  > im assuming it will as at the low current quenching should be
 > >  >relatively
 > >  > >  > easy with an air blast!
 > >  > >  > ill be running at a 100bps (im in uk).
 > >  > >  > many thanks
 > >  > >  > colin heath
 > >  > >  >
 > >  > >  >
 > >  > >
 > >  > >
 > >  >
 > >  >
 > >
 > >
 > >
 >
 >