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Oddball Oudin Coil
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From: Ralph Down [SMTP:rjdown-at-fan-dot-net.au]
Sent: Wednesday, March 18, 1998 6:04 PM
To: Tesla List
Subject: Re: Oddball Oudin Coil
Tesla List wrote:
>
> ----------
> From: Antonio C. M. de Queiroz [SMTP:acmq-at-compuland-dot-com.br]
> Sent: Monday, March 16, 1998 10:22 PM
> To: Tesla List
> Subject: Re: Oddball Oudin Coil
>
> Edward V. Phillips wrote:
>
> > "That device is an induction coil (mechanically operated
> > fly-back circuit), not a Tesla coil."
> >
> > Those things have been called Tesla Coils for many, many
> > years. In the form with which I am familiar they are used for
> > testing for (or sometimes starting) leaks in vacuum systems. I
> > have one which appears to have been made around 1918. Puts
> > out about a 3/4" spark and works fine on vacuum systems, as
> > it's supposed to.
> >
> > Don't know where the apellation Tesla Coil came for\
> > in regard to these........
>
> All the books that I have seen from the 1890-1930 identify very
> clearly what is an induction coil and what is a Tesla coil (when
> they mention the last), as they work on very different principles.
> It is frequent to see an induction coil used as power supply for
> a Tesla coil.
> I really don't know exactly what is called an "Oudin coil". I only
> see this name on Internet documents, without references. Maybe that
> particular configuration for an induction coil?
>
> Antonio Carlos M. de Queiroz
> http://www.coe.ufrj.br/~acmq
I recall reading in a back issue of T.C.B.O.R a discussion on the
differences between a Tesla Coil and an Oudin coil. The main difference
appears that the Tesla coil uses a secondary which is grounded at one
end and that the Oudin coil connects the secondary to the top of the
primary coil. Maybe some of the T.C.B.O.R members could add to this.
Regards
Ralph Down