Re: TSG Advantages?

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

Original poster: "Edward Wingate by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ewing7-at-rochester.rr-dot-com>

Tesla list wrote:
> 
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<FutureT-at-aol-dot-com>
> 
> In a message dated 8/31/01 11:48:29 PM Eastern Daylight Time,
> tesla-at-pupman-dot-com writes:
<snip>
> Marc, all,
> 
> As long as the gap is firing during a bang, the path conducts
> continuously.  It shouldn't matter how long the trigger
> pulse is, provided it's not too long.  I think something else is
> happening.  Some have suggested that a slower (later) quench
> may actually be better.  However a late quench gives less time
> for the capacitor to recharge for the next bang.
> 
> >
> >   Mark R's scope test of Ed
> >  > Wingate's magnifier which uses a series rotary showed that it
> >  > quenches on the first notch.  I don't know what the effective
> >  > coupling of Ed's magnifier is.
> >
> >  I think it was around "6" or something like that?
> 
> I was refering to the effective or overall coupling which is
> lower than the driver k.  This is the k which must be
> considered for quenching for typical magnifier work.  The
> driver k is probably about 0.45.  As was pointed out by
> Dr. Antonio, the formula for calc'ing the effective coupling
> of a magnifier is:
> 
>   Ke = Kd*sqrt(Ls/Lr + Ls)
> 
> where Ke is the effective coupling, Kd is the driver coupling,
> Ls is the secondary inductance, and Lr is the resonator
> (extra coil) inductance.
> 
> I'm guessing at values here, but if Ed's secondary is 15mH,
> and the resonator is 45mH, and the driver k is 0.45, then the
> effective k = 0.225, or about the same as a classic coil such
> as Richard Hull's Nemesis TC.
> 
> The notch of quenching will depend largely on the
> effective k of the system.
> 
> John Freau

John,

For the record, the driver inductance is 13.6 mh, the resonator is 77 mh
and the measured driver/primary coupling factor is .482.

Ed Wingate RATCB