Re: Transformer basics
Subject: Re: Transformer basics
From: jim.fosse-at-bdt-dot-com (jim fosse)
Date: Tue, 27 Feb 96 23:15 PST
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> my intro post hasn't arrived here yet but some may remember me from
>tesla-at-usa-dot-net. I posted there before about the problems i've been having
>getting suitable supply transformers. At the moment i dont have a working
>coil and the only transformers i could lay my hands on (10kv-at-30ma and
>seem to be all that was available.
I using 1/2 of a 15Kv neon right now. 7.5Kv at 60ma. and am getting
2' sparks. Over the weekend Richard Quick needed a quick shot of ozone and
thru together a TC with "small" parts on hand and got over 30" with 1 neon!
> I have all the local sign shops looking-
>out as they dismantle old signs and have even contacted a company in london
>who used to wind a very large proportion of neon transformers in the uk but
>every one seems to be using solid state 600V H.F. supplys now, (probably
>another damn E.C. regulation).
Yep, I've spent the last 2 months testing my companies equipment to comply
with EC 92. some good, some bad!
> My two transformers give me about
>1.1KVA after unpotting and removal of a couple of shunt plates, and are
>probably more than ample for my first attempts, although i'll probably soon
>outgrow and /or destroy them in my first efforts.
I think Ed Sodergrin(sp) was up to 50" sparks on 15Kv -at- 120ma.
Also look for Oil furnace ignition xformers, and high pressure Xenon Lamp
Ignitors. the Xenon lamp ignitors are a 15KV 20ma-30ma shunt limited
xformer, a 1800pF 30Kv doorknob cap, sparkgap and HV xformer. I found one
surplus for $19.95 US last november.
good scrounging (looking for odd parts, incase the
american idiom doesn't translate)