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Re: primary and secondary diameters
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To: "'Tesla List'" <tesla@poodle.pupman.com>
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Subject: Re: primary and secondary diameters
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From: Tesla List <tesla@stic.net>
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Date: Wed, 26 Nov 1997 23:30:22 -0600
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Approved: tesla@stic.net
From: Malcolm Watts[SMTP:MALCOLM@directorate.wnp.ac.nz]
Sent: Wednesday, November 26, 1997 11:07 PM
To: Tesla List
Subject: Re: primary and secondary diameters
Hi Christopher,
> From: Christopher Stone[SMTP:stone@etak.com]
> Sent: Tuesday, November 25, 1997 6:45 AM
> To: tesla@pupman.com
> Subject: primary and secondary diameters
>
> Hi all,
>
> I am working on building my first coil and I have found information
> that has stated that the primary should be twice the diameter of the
> secondary and others state 3 times the diameter. Which works best?
> I was planning on using heavy guage wire #8 or so, how much difference
> does it make between air wound and bundled?
You get a lot more inductance for the same length of copper in a
bundled winding but the insulation requirements are a lot more
problematic too. I've found that a good compromise is a two-layer
flat spiral with an acrylic sheet between layers.
Malcolm