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Re: 2 questions on resonance



And, of course, this is how small welders limit the current. You turn the
crank on the top or side, and the shunt slides in and out of the core

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> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: 2 questions on resonance
> Date: Sunday, April 11, 1999 5:28 PM
> 
> Original Poster: "Reinhard Walter Buchner" <rw.buchner-at-verbund-dot-net> 
> 
> Hi Ed,
> 
> I forgot to add this to my "And more NST stuff" mail.
> Sorry about that.
> 
> 
> >In the "good old days of spark transmitters" it was quite common to use
> >the 60 Hz resonance of the primary circuit to control the discharge
> >rate.  Thordarson (and probably others) made special transformers with
> >an adjustable shunt between primary and secondary to permit adjustment
> >of the leakage reactance in order to get resonance.  I have such a
> >transformer (1 kW) which I intend to work with some day.  I have never
> >read a good description on how the variable shunt was used, but suspect
> >that it was adjusted for "maximum good" with either fixed or, much more
> >commonly, rotary gaps.  Sounds as if Reinhardt (sp???) has descibed
> >German NST's with a very similar arrangement.
> 
> 
> Interesting. Could you make an ASCII drawing of how this transformer
> is built? Is it similar to my NST construction?
> 
> Coiler greets from germany,
> Reinhard
> 
>