Re: strap primaries

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 3/1/02 10:14:56 AM Eastern Standard Time, tesla-at-pupman-dot-com
writes:

Greg,

I think tubing is used not so much to stop corona, but simply
because it's more readily available.  Tesla liked strap.  They
probably both work the same in a practical sense.  Strap may 
permit you to fit more turns in a smaller diameter.  

cheers,
John


>
> Hey guys, A question about primaries.
>
> I once read that copper strap has better RF conductive properties than 
> copper tube, but we use tube in tesla primaries to suppress corona 
> loss. My question is why? If you have, say, a peak primary voltage of 
> 40kV and a 10 turn primary, don't you technically only have 4kV/turn? 
> Isn't 4kV too low a voltage for corona discharge to really be a 
> problem? I would rather use strap as it is much easier to bend then 
> tube.
>
> Cheers,
>
> Greg Peters