Re: Please Explain This

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

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

 >
 > That's the way I read it. Optimal k under spark loading is possibly
 > much higher than an unloaded coil. I remember reading once an account
 > of someone whose system was plagued by secondary flashovers but
 > significantly increasing the input power (I think by upping the
 > breakrate substantially) caused the problem to disappear as the
 > sparks really flew. Perhaps that someone is still on the list?
 >
 >      In the research I did for my article, I noted that under steady-
 > state conditions the coil was (in the traditional sense) way
 > overcoupled prior to sparks flying. However, with heavy loading, the
 > transfers reduce to single one-way status, a condition one might see
 > as being critically coupled.
 >
 >      This might be an avenue of exploration for Paul Nicholson if it
 > hasn't been done already.
 >
 > Cheers,
 > Malcolm

	It is certainly true for typical transmitters.  As you increase the
coupling it is necessary to keep tuning the primary to a lower frequency
to maintain maximum output.  Also shows up in simulations.

Ed