RE: Primary coil configuration

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Lau, Gary" <Gary.Lau@xxxxxx>

I agree with John Freau's post - there's a limit to how high one may
mount the toroid above the secondary, and it works best if you have a
smaller toroid just above the secondary and the main, larger one above
that.  I also believe that there's a limit to the "bang size" (1/2 C
V**2) that may be applied to a given secondary, above which you'll get
racing sparks.

Regards, Gary Lau
MA, USA

> Original poster: "Krohns" <2halice@xxxxxxx>
> And concerning the amount of power I will be applying to the coil, I
can
> either run it at reduced power, or.... couldn't I raise the height of
my
> toroids to reduce strikes to the primary, or will raising the toroids
height
> cause the upper winding to emit streamers?
>
> Hal in Tucson
>
>  > Original poster: "Lau, Gary" <Gary.Lau@xxxxxx>
>  > With your 15/90 power supply, if you do a good job optimizing
things,
>  > you may find that a 4" secondary is overpowered if you maintain the
>  > usual 5:1 secondary winding aspect ratio.  This will result in
>  > persistent primary strikes, and you'll soon want to build a bigger
>  > secondary, just to get the top load further away from the primary.