Re: secondary core other than air

["Jim Lux" <jimlux-at-jpl.nasa.gov> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

-----Original Message-----
From: Tesla list <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Monday, August 07, 2000 11:32 AM
Subject: Re: secondary core other than air


>Original poster: "Garry F." <garryfre-at-pacbell-dot-net>
>
>I often thought the reason telsa coils were air core was because Ferrite
>might not be capable of rapid magnetic change that would be required for a
>high frequency app such as tesla coils. I think the atoms would not be able
>to spring back into their original orientation once the magentic field
>collapes fast enough.
>
>I could be wrong tho, but I tend to think this is why they reccommend only
>non-magnetic wire as conductors in Tesla coils


Ferrites can certainly handle TC frequencies (I use them at 13 GHz).
Actually at TC frequencies, you might want powdered metal cores... Ferrites
are more appropriate for higher frequencies.

Insulation is going to be the issue.  You don't need more coupling (most
TC's aren't coupled very tightly, and tighter coupling degrades performance,
except for magnifiers).