Tungsten electrodes

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

Original poster: "Jeff Kamla by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jeffk-at-sinclair-dot-net>

Howdy  Gary

just dropping you this line to let you know I have various dia.'s of
Tungsten rod.  if you need some let me know.
have a good day and happy coiling !

 jeff......

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, January 10, 2002 7:07 AM
Subject: Trigger electrode wear


> Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Gary.Lau-at-compaq-dot-com>
>
> My progress on a triggered spark gap may only be described as "glacial",
> but I am making progress.  It seems as if most of the ones built to date
> have the trigger electrode located midway between the two main electrodes.
> When the main gap fires, the high-current arc passes through the trigger
> electrode in two separate segments.  In addition to the trigger electrode
> enduring the full power of the main arc, it would seem as the gap losses
in
> such a multi-segment arc may be higher.
>
> I'm wondering if the trigatron geometry, where the trigger electrode is
> coaxial and flush with one of the main electrodes, would be better so far
> as trigger electrode erosion goes?  I'm just trying to decide if I need to
> find tungsten rods, or if any kind of wire or threaded rod would suffice.
> If it only has to endure the relatively low energy pumped into the trigger
> coil, i.e. if the main arc does not pass through the trigger electrode,
> there should be almost no erosion.  Does it?
>
> My only reservation with the trigatron geometry is that the trigger
> polarity with respect to the adjacent electrode is always the same, since
> I'm using a DC-powered trigger generator. This results in alternate
trigger
> polarities with respect to the main electrode biases on alternate
> half-cycles.  Is this only significant if nanosecond-level jitter is a
concern?
>
> Regards, Gary Lau
> MA, USA
>
>
>
>