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Re: transformer lamination

Tesla List wrote:
> 
> >> > Subject: transformer lamination
> >> Subject: Re: transformer lamination
> >> > Subject: transformer lamination
> >Subject: Re: transformer lamination
> >> > Subject: transformer lamination
> >> Subject: Re: transformer lamination
> >> > Subject: transformer lamination
> 
> Subscriber: mhammer-at-misslink-dot-net Tue Feb 11 22:57:30 1997
> Date: Tue, 11 Feb 1997 13:04:12 -0600
> From: Mike Hammer <mhammer-at-misslink-dot-net>
> To: tesla-at-pupman-dot-com
> Subject: Re: transformer lamination
> 
> At 10:25 PM 2/10/97 -0700, you wrote:
> >> > Subject: transformer lamination
> >> Subject: Re: transformer lamination
> >> > Subject: transformer lamination
> >
> >Subscriber: major-at-vicksburg-dot-com Mon Feb 10 21:56:20 1997
> >Date: Sat, 08 Feb 1997 23:10:19 -0600
> >From: RODERICK MAXWELL <major-at-vicksburg-dot-com>
> >To: tesla-at-pupman-dot-com
> >Subject: Re: transformer lamination
> >
> >Tesla List wrote:
> >>
> >> > Subject: transformer lamination
> >>
> >> Subscriber: bert.hickman-at-aquila-dot-com Fri Feb  7 22:54:31 1997
> >> Date: Fri, 07 Feb 1997 06:14:37 -0800
> >> From: Bert Hickman <bert.hickman-at-aquila-dot-com>
> >> To: tesla-at-pupman-dot-com
> >> Subject: Re: transformer lamination
> >>
> >> Tesla List wrote:
> >> >
> >> > Subscriber: major-at-vicksburg-dot-com Fri Feb  7 00:39:27 1997
> >> > Date: Thu, 06 Feb 1997 23:23:10 -0600
> >> > From: RODERICK MAXWELL <major-at-vicksburg-dot-com>
> >> > To: tesla-at-pupman-dot-com
> >> > Subject: transformer lamination
> >> >
> >> > I have completely cleaned up and reassembled the core of the first of
> >> > four neon transformers that I got from a sign shop in town. after I put
> >> > it back together I checked the isolation between laminations with an ohm
> >> > meter. And lo and behold they read low resistance. I'm not an electrical
> >> > engineer like some of you fellas but even I know that there should be
> >> > some sort of insulating coating between the laminations to cut down on
> >> > eddy cuurents! Are neon cores supposed to be this way? The only thing I
> >> > see on the laminations is some sort of metal blueing. I guess this is to
> >> > keep them from oxidizing, I have taken appart other cores and they all
> >> > had varnish applied. I wonder if it would hurt to apply some varnish?
> >> > Any suggestions, or answers would be welcome!
> >> >
> >> >                                Frankensteins Helper
> >> >                                        Max
> >>
> >> Roderick,
> >>
> >> You're right - laminations are usually insulated from one another. A
> >> _thin_ layer of varnish should work very well.
> >>
> >> -- Bert --
> >
> >
> >   Okay then I'll varnish the suckers since there seems to be enough
> > clearance around the primary winding. I plan to take on the long, and
> > tedious task of rewinding the secondaries for the same reason you have
> > just stated (undersized wire). I may end up with lower voltage but the
> > transformer should be more robust, and able to have a higher current
> > output since I'll remove some of the shunts, and add pfc caps.
> >
> >                              Thanks for the the information!
> >
> >
> >
> >                                   Frankensteins Helper
> >                                           Max
> 
> Roderick,
> 
> I wouldn't go to the effort. All my unpotted neons show DC resistance
> of zero ohms across the laminations. I have delaminated them all
> and reassembled them without revarnishing. They work fine.
> Neons are so terribly inefficient to begin with I doubt it would
> be worth the effort.
> 
> Mike Hammer
> mhammer-at-misslink-dot-net


  I am one of those types that likes things to look as well as they
work! That is one of the reasons I want to varnish them.