Re: First light for an old coiler

["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 11/6/01 9:43:59 PM Eastern Standard Time, tesla-at-pupman-dot-com 
writes:

Dave,

Regarding the issue of how much power and voltage a short coil
can withstand...  much depends on the breakrate.  This is 
something that is seldom discussed.  This is why
differing answers to this question are given.  A short secondary
can handle more power at a high breakrate because the bang
size and voltage output is lower for a given input power.  
However low breakrates appear to be more "efficient".  For this
reason a tall coil is much better than a short one for overall
maximum efficiency.  A tall coil will tend to reduce the over-coupling.

Cheers,
John
--

> I assumed that being such a short coil higher powers would simply cause it
>  to arc to the strike ring or primary and in testing this seemed to be the
>  case. Can this be controlled?
>  
>  I suspected as much with the over-coupling and will do some testing this
>  week to determine the effect of raising the secondary relative to the
>  primary. The big question is how will going to a secondary that is nearly
>  twice as long impact over-coupling?