RE: DC transformer
To: Nikola Tesla aka Chip Atkinson <tesla-at-grendel.objinc-dot-com>
Subject: RE: DC transformer
From: Kristian Tapani Ukkonen <kukkonen-at-snakemail.hut.fi>
Date: Tue, 31 Jan 1995 13:44:18 +0200 (EET)
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> MN> The DC transformer I mentioned in my previous post is rated
> MN> at 1.5 MA. It is set up with a complete control circuit,
> MN> including a switch, a small variac, a meter, and RF chokes and
> MN> bypass caps across the primary and ground lugs. The primary is
> MN> 118 VAC, 50-500 CPS. I can make a Jacob's ladder from this?
> MN> One side + and the other - ? If that works I expect it would
> MN> require a dedicated ground or could it be filtered back into
> MN> the house ground?
> Oh, you did not mention before that this was a DC power supply.
> While it is possible to make a Jacob's Ladder from this, I doubt
> if the secondary amperage is sufficient to make it decent. I wonder
> if there are ideas from anybody else on what this might have been, or
> what it can be used for? [RQ]
I can't say that I'm an expert on this but it really sounds like a
"spark-coil" (aka induction coil or oudin coil) used for testing
leaks in a vacuum system.. It was after all from a person who works
with vacuum systems, right?
btw: Does the 110VAC go directly to the "x-former" or is there some
system (either mechanical or electrical oscillator) to pulse the
current that goes to the primary coil? Most of the older spark-coils
use a mechanical "switching" scheme..