Re: tesla coil is an air core. why?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<davep-at-quik-dot-com>
> 
> 
> > why does the tesla coil use an air cored design?
>         Short answer:
> 
>         Because that's what works best, so far.
> 
>         Tesla started with cored coils.  With the materials
> 
>         available, he found that air core (no core) worked
>         best.  I'd guess new materials (except maybe
>         ferrite) have not changed this.
>

	His iron-cored coils were short and fat, and used a lot of
insulation.  They worked of course, just as ignition coils work.

Ed