RE: photocopier transformers

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Loudner, Godfrey by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>

Hi Thad

The transformer does not output the listed voltage unless the cap is
connected to the extra winding. Those who have successfully used the
transformer for tesla coils don't use the caps and place two in series. By
using a slightly LTR tank cap, the voltage output can be around 10kV. 

Godfrey Loudner

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
> Sent:	Thursday, December 20, 2001 1:13 PM
> To:	tesla-at-pupman-dot-com
> Subject:	Re: photocopier transformers
> 
> Original poster: "Thad Howard by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <thoward-at-nhm-dot-org>
> 
> 
>  Jim, and all,
> 
>  I bought four of the 5021G10 transformers to experiment with
>  your "more high voltage power" circuit.  The only info printed on the
>  xfmr is the G.E. part #.
> 
>  I connected a 12v 20va xfmr to the primary of each and got secondary
>  meter of 270v. and a 3rd winding meter of 31v.
>  They all metered the same.  I then connected the pri. of each to a 20a
>  variac.  Dialed up to 12v, 18, and 22v.  The secondary results were
>  270v, 400v, and 490v respectively.  3rd windings 31v, 45v, and 57v
>  respectively.
> 
>  Does this mean that for a 4500v secondary, the primary must be
>  220v?  Is there anything wrong with my method of testing them for
>  voltage?   My xfmrs and yours have the same part #,  my resistances are:
>  pri 1.2 ohms, sec 266 ohms, tert 4.8 ohms.  Are yours the same.   Am I
>  overlooking the obvious?
> 
>     Thanks for the articles on your website.  I will be studying
> "measuring transformer parameters" next.
> 
> Thad
> 
> 
> 
> 
> Tesla list wrote:
> 
> > Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <jimlux-at-earthlink-dot-net>
> >
> > C&H TR9407
> >
> >  4500 VAC HIGH VOLTAGE TRANSFORMER G.E. #9T68Y5021G10. Input: 115VAC
> 60Hz -at-
> > 8 amps. Outputs: 4500 VAC no-load, 400 mA short circuit,and 660 VAC.
> > Dimensions: 7" wide x 6" high x 6" deep. Weight 30 lbs. 10 MFD660 VAC
> > required and included. Stock #TR9407 $50.00
> >
> > http://www.candhsales-dot-com/  is the website
> >
> > http://www.aaaim-dot-com/CandH/images/TRFS/TR9407.gif is the photo
> >
> > ----- Original Message -----
> > From: "Tesla list" <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Sent: Wednesday, December 19, 2001 9:32 PM
> > Subject: Re: photocopier transformers
> >
> > > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <Hollmike-at-aol-dot-com>
> > >
> > > Steve,
> > >    I looked for my C & H catalog, but couldn't find it.   i mentioned
> in a
> > > previous post I saw a photocopier tranny the had 5kV and 300ma out.
> I
> > might
> > > have been thinking of one on the same page in the catalog the
> photocopier
> > > tranny did.  My memory could have finally given out..lol   seemed like
> the
> > > shipping weigth was in excess of 30 or 40 lbs.  It's been a while
> since I
> > > looked at it, so who knows what I remember.
> > > Mike
> > >
> > >
> > > >
> > > > J,
> > > >
> > > > Have a look at candhsales-dot-com in their transformers section of the
> > on-line
> > > > catalog.  You will see those transformers.  A pair of them have been
> > > > reported to do well in TC service.
> > > > --Steve
> > >
> > >
> > >
> > >
> > >
> > >
> 
>