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Re: Phasing (fwd)
Subject: Re: Phasing (fwd)
Date: Thu, 17 Apr 1997 23:11:48 -0600 (MDT)
From: List owner <listown-at-poodle.pupman-dot-com>
To: tesla-at-poodle.pupman-dot-com
From: RODERICK MAXWELL <major-at-vicksburg.pupman-dot-com>
Naw I really want to give my caps and coil a workout! When I get my new
spark gap built and clean up a couple more of the 15Kv jobs I,m going to
put the full 15Kv across the coil, and have two or three transformers in
parallel -at- 15Kv!!!
Frankensteins Helper
Max
> >
> > I just found out something new about neon transformers, and I had to
> > learn it the hard way. After tearing down a rebuilt 15Kv neon
> > transformer because of arcing between the primary, and the core, I
tried
> > to find a better method of insulating it. I tried poly spacers and
> > mineral oil to correct the problem. But when I applied power I got very
> > low output. So naturally I thougt it was the way that I was insulating
> > the transformer that was the problem. So I had one transformer that I
> > had not put in oil, but had the poly spacers between the secondaries.
> > Still the transformer barely lit the neon tube. So of course I took the
> > spacers out and still no joy!! Now one of these transformers had worked
> > the first time I tried it,so I knew it was good. Now I was really
> > stumped and began to sweat buckets! So I told myself settle down and
> > really take a look at this thing. Each secondary has a bare patch that
> > is covered with transparent plastic on the opposite side from the
output
> > wire on the outside covering. When I put the secondaries back on the
> > cores of each transformer both of these patches were on top. When I
> > examined the other transformers I also had put the secondaries on their
> > cores with both of the patches either on the top, or both on the
bottom!
> > So I decided to switch one of the secodaries and bang! It lit the neon
> > like a xmas tree! After flipping one of the secondaries on each of the
> > transformers they all started to work. I guess if I had worked in on
the
> > assembly line where these suckers are put together I would have known
> > better!
> >
> > Frankensteins Helper
> > Max
>
>
> Max -
>
> If you want to double the output current at the expense of half the
> output voltage, you can arrange those secondaries like you had them
> and simply connect the leads together (windings in parallel). The
> added advantage is that you now have a secondary that is actually
> ground-referenced.
>
> - Brent