Re: Primary coil design

["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 5/31/02 1:20:53 PM Eastern Daylight Time, tesla-at-pupman-dot-com
writes:

Dan,

Although a solenoid (cylinder) primary can give the
tightest coupling, tight coupling is not desireable.  Too tight
coupling will simply cause racing sparks and flashovers and
will destroy the secondary.  If you use a solenoid primary,
you'll have to make it rather wide, or raise the secondary a 
lot, to lower the coupling to a useable degree.  Some folks
use them though.

Cheers,
John

>
> Hi folks,
> What is a solenoid type primary? Is that cylindrical? I noticed that it was
> mentioned that a solenoid primary has the highest coupling to the
> secondary. I'm in the developmental stage still and trying to decide my
> primary design.