Re: How big is LTR?

["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 12/16/02 2:05:25 PM Eastern Standard Time, 
tesla-at-pupman-dot-com writes:

Gary,

In work I've done, I found troubling problems with the voltage reversal mode
with certain NST - LTR combinations.  In some cases I needed to
use a rather large value cap to stop the reversal problem.  It would
appear to me that NST characteristics vary greatly, making a
certain amount of experimentation necessary for best results.
Often values somewhat near the resonant values cause the worst
problems with this reversal issue.

John


>Hi Terry:
>
>I'm curious as to the derivation of the pi/2 factor.  As far as diminishing
>NST resonant rise, the further from a mains-resonant value (i.e. higher),
>the better.  And a lower cap value would charge to a higher voltage, so
>that argues for a lower value.  But the inductive kick effect favors the
>higher values.  Who knows what happens when the current limiting shunts
>saturate.
>
>Gary Lau
>MA, USA