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Multi-layered Secondary HELP!!




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From:  Bert Hickman [SMTP:bert.hickman-at-aquila-dot-com]
Sent:  Tuesday, February 17, 1998 8:55 AM
To:  Tesla List
Subject:  Re: Multi-layered Secondary HELP!!

Tesla List wrote:
> 
> ----------
> From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
> Sent:  Monday, February 16, 1998 2:07 PM
> To:  Tesla List
> Subject:  Re: Multi-layered Secondary HELP!!
> 
> Hi all,
>           In reading Bert Pool's post on this subject, an interesting
> idea comes to mind. We know that if you wind a two layer coil with
> the windings wound in the same direction and connected in parallel it
> will work whether inductively coupled to a primary or used as an
> extra coil. But what about if the windings are going in the opposite
> direction? Inductive coupling is going to lead to something of a
> short circuit, at least near the base where coupling is highest. But
> what about if it is run as an extra resonator? What properties will
> it have? Probably b-all inductance. Any thoughts on this? Perhaps I
> should just wind one and check it out.
> 
> Malcolm

Malcolm,

Interesting speculation. I'd bet that the overall impact would be to
dramatically reduce the resonator's inductance, since the opposite
winding sense, combined with the high coupling coefficient (near 1)
should cause the inductance of each to just about cancel out. 

-- Bert --