Re: Toroid Height

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


If you get the toroid too close it acts as a single turn short circuit and
will not allow your upper turns in the sec to be effective.

Good rule of thumb:  Base of toroid approx 3.5 inches above the last turn of
sec. coil for med size coils.  If possible spacewind the last 4-5 turns of
sec coil --- use plastic fishline and then remove it later after your first
coil of sec insulation is applied.

Dr. Resonance


 > If one sets the toroid height too high above the secondary, the top turn
of
 > the secondary is not shielded properly and breakout can occur from the top
 > turn.
 >
 > QUESTION:  What is the motivation for raising the toroid above the top
 > turn.  Why doesn't one put the tororid at the position of the top turn???
 >
 > Gerry R
 > Ft Collins, CO
 >