Re: [TCML] Primary angles

[Dave Goodfellow <dgoodfelo@xxxxxxxxxxx>]

Not just feasible, I have done it a few times on small coils with 
one-end-grounded neon transformers in the 4 to 6kv 20 ma range.
Seen here:
http://s205.photobucket.com/albums/bb11/dgoodfellow/?action=view&current=largespray.jpg

The foot or so of spark is reasonable for a transformer of this size, 
but I will say that is is tricky to get the primary turns just right as 
there is no adjustment with my arrangement other than adding/subtracting 
a capacitor once it is close to the tune point.

Dave Goodfellow

futuret@xxxxxxx wrote:
> ?>Then is it feasible to wind the primary right on the secondary coil 
> form
> > below the secondary windings?
>
> Tony,
>
> This has been done, but the coupling cannot be adjusted easily
> unless the primary is such that it can slide along the secondary form.
>
> John
>
>
>
>
>
> > Or use a reversed cone primary to get the outer
> > windings below the bottom of the coil? Any advantage/disatvantage to 
> either,
> > other than the additional height?
>
> > Tony Greer
>
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