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Re: repair





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From: "tesla"-at-poodle.pupman-dot-com-at-PMDF-at-PAXMB1
To: Benson Barry; "Tesla-list-subscribers"-at-poodle.pupman-dot-com-at-PMDF-at-PAXMB1
Subject: Re: repair
Date: Saturday, February 01, 1997 3:22AM

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> > > Subject: Re: repair

Subscriber: major-at-vicksburg-dot-com Fri Jan 31 23:12:03 1997
Date: Fri, 31 Jan 1997 23:38:56 -0600
From: RODERICK MAXWELL <major-at-vicksburg-dot-com>
To: Tesla List <tesla-at-poodle.pupman-dot-com>
Subject: Re: repair


  I just unpotted the first of four neon transformers that I got from a
sign shop in town. The guy there told me they were 15Kv -at-30ma. I'm sure
they are 15Kv but not so sure about the current rating as the plates
have all been removed. I kind of went back to the dark ages in the way I
removed the potting. I boiled them in oil! I used a burner out of a old
space heater to heat the metal pan pan filled with diesel! I know this
sounds dangerous folks but it was a good 20' away from anything that
would burn including yours truly. It really speeds up the process as it
uses solvent and heat to disolve the tar. Just don't try this at home
folks! The core looks, and disassembles the same way discribed in the
archives. One secondary reads megohm resistance and is probably fried.
The other reads a little over 8kohms. Is this the usual resistance of a
15kv secondary? Or is this side shorted???


                                 Frankensteins Helper
                                        Max

Hi Max,
I get 2.72 kilohm between the high voltage terminals and ground,
and  5.5 kilohm between the high voltage bushings on my Jefferson
15,000 volt, 60 mA transformer.  I had a bad coil on a transformer
that I had cleaned ultrasonically.  I unwound a few layers and found the
bad spot (wire had melted and opened??).  If that doesn't work
then rewinding or swaping in another coil from another transfomer
might.
Barry