Re: strap primaries

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

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

Hi Greg, 
  While you are right about the turn-to-turn voltages not being so high, there
would still have to be some point in the primary that has, as you suggest,
40kV  on it.  The corona losses may not be to the next turn, but to the
air/ground from that point.  The larger radius of curvature helps prevent THAT
loss. 
Mike 



>
> 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