Re: School Scoping

To: tesla-at-pupman-dot-com
Subject: Re: School Scoping
From: "Megavolt Nick" <tesla-at-fieldfamily.prontoserve.co.uk> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Tue, 01 Feb 2000 12:36:11 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi All,

> > Scot, all,
> >
> > What happens is this:
> >
> > I turn the coil on, it runs OK for about 10-15 seconds, and then the
spark
> > gap will stop firing completely.
I had a problem very much like this a while back when I switched my little
coil to a new linear rq gap.  I've never tracked down what exactly what it
was, but I had a hunch it was the gap doing something it shouldn't be. I
just rebuilt the gap and it ran fine, hwo is your system gapped?
>
> Snipperz
>
>
> Hi Nathan .....
>
>
> you got me wondering noww...


> what are you using for a connector to the primary coil ?  im starting to
> believe that either ....   the connections to the primary/ cap system
> are failing  or  the transformer is heating up and doing something weird
Don't think so, when I had this problem I rebuilt all the pri connections
with 100A copper strap and it made no difference at all.  If you put a
current meter onto the circuit you will find it s not actually very high so
I don't think its the xfmr.
> ...
>
> have you tried running the transformer as a jacobs ladder for several
> minutes to see if the tranny is failing ?
I tried running the whole coil flat out with the sec shorted for half an
hour, and neither the xfmr nor the caps did anything but work perfectly.

We seem to have had a few cases of this rather odd failiure mode, just a
shame I fixed my coil so I can't go back and investigate it properly.  If
anyone feels like putting tank circuit probe onto nathan's coil I'm sure
that'd reveal a lot about the nature of the problem.

> just thinking ........  hmmmm....
>
>
> Scot D
>
>
>