Re: H/D ratio

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

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


The optimum is 0.9.  A coil this short will have constant arcing problems
top to primary and top to ground.  A 4.5:1 gets the toroid a distance away
from the primary and allows an even potential buildup along the elongated
sec coil.

Dr. Resonance

 >
 > I found on the net in a few places stating that the maximum amount of
 > inductance from a coil is when the height is the same as the
 > diameter.  This is a 1:1 ratio.
 >
 > If that is the best inductance ratio then why is this ratio not used for
 > the tesla coil secondary to take advantage of a high inductance ratio
 > between the primary and secondary?
 >
 > Luke Galyan
 > Bluu-at-cox-dot-net
 >
 >
 >
 >