Re: Primary Q - A Brain Teaser

To: tesla-at-pupman-dot-com
Subject: Re: Primary Q - A Brain Teaser
From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Tue, 17 Nov 1998 16:12:04 -0700
Approved: terryf-at-verinet-dot-com

Hi Ed,
        
> Original Poster: Ed Phillips <evp-at-pacbell-dot-net> 

> > So as the voltage drops with each cycle, Q does as well !!!
> > Clearly, in order to obtain a high primary Q, one must use the
> > highest possible primary voltage. Although the energy lost in
> > absolute terms is highest with the highest voltage, the energy
> > lost as a percentage of total power is lowest. If one considers
> > that the gap has a conduction voltage of say 50V and that is either
> > fixed or rising, it's not hard to see that if remaining cap voltage
> > is twice that figure, Q drops into the dirt on the last cycle before
> > the gap finally goes out. It doesn't just tail off. Remember that the
> > gap roughly exhibits a V*I loss, not an R*I^2 loss. Gap current is
> > not proprotional to gap conduction voltage.
> > 
> > Comments welcome,
> > Malcolm
> > 
> > ** If it's under 10 Amps it's Leakage Current **
> 
>     Fundamental error!  The FRACTIONAL voltage drop is the same from cycle
> to cycle, not the voltage.
> 
> Ed

Come again? The voltage is plotted on a linear scale. The 
proportional voltage drop of total voltage on the first cycle is 
different to that on the next. In absolute terms, the voltage drop is 
definitely the same isn't it? That's what the scope showed anyway.

Malcolm