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Re: H.V. Transformers

Subject: Re: H.V. Transformers
  Date: Thu, 8 May 1997 09:26:46 -0400
  From: "Lord Talimar" <lordtali-at-mill.tds-dot-net>
    To: "Tesla List" <tesla-at-pupman-dot-com>


how did you get the oil transformers to hook in parallel with the center
tap grounded.  I tried to hook mine in parallel and it just seemed to
kill
each other, no matter how I tried to hook them up. I even tried to
connect
the cases so the center taps were connected together, too.  

Confused

LT

----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-poodle.pupman-dot-com
> Subject: Re: H.V. Transformers
> Date: Wednesday, May 07, 1997 1:03 AM
> 
> Subject:  Re: H.V. Transformers
>   Date:   Tue, 06 May 1997 06:39:27 -0400
>   From:   "Daryl P. Dacko" <mycrump-at-cris-dot-com>
>     To:   Tesla List <tesla-at-pupman-dot-com>
> 
> 
> At 11:49 PM 5/5/97 -0500, you wrote:
> 
> >Subject:  H.V. Transformers
> >  Date:   Mon, 5 May 1997 12:48:57 +0500
> >  From:   "Alfred A. Skrocki" <alfred.skrocki-at-cybernetworking-dot-com>
> >    To:   Tesla List <tesla-at-pupman-dot-com>
> >
> >
> >Greetings all
> >
> >I have noticed many of you have difficulty finding Neon sign 
> >transformers for your Tesla Coils, but aside from Neon sign 
> >transformers, Neon sign bombarder transformers and pole pigs
> >there is another usually neglected source of H.V. transformers
> >namely oil burner ignition transformers. These transformers put
> >out typically 10,000 volts at 23 ma. and they are damn near 
> >indestructible. They can easily be connected in parallel for higher 
> >power levels. Whats nicer yet is most oil burner repair men will 
> >throw out the entire burner with the ignition transformer. Right now 
> >is the end of the heating season for North America and I have pulled 
> >six of these little beauties out of the trash in the past two weeks. 
> >When you see an oil burner unit in the trash the transformer is the 
> >box on top of the motor typically 5" X 3" X 4" high. Usually the 
> >transformers are covered with soot and grease but you can submerge
> >these babies in a hot T.S.P solution scrub and rinse, LET DRY BEFORE
> >testing. BTW if anyone know of any other untapped sources of H.V. 
> >transformers why not share the info with the group.
> 
> I've always used oil burner transformers for my tesla coils, as they
> are much more available here than neon sign transformers.
> 
> I'd have to disagree about the indestructible part though. My last
> coil used a bank of six of these in parellel, and after several hours
> of operation, they started to fail, due I beleve to carbon tracking
> inside the case.
> 
> This was back before this list, where I learned about chokes and safety
> gaps and such...
> 
> I beleve I could have extended the life a great deal with chokes and 
> extened the performance a whole lot more with what I've leared here !
> 
> Daryl
>