Re: coupling coefficient

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

Original poster: "Christoph Bohr by way of Terry Fritz <teslalist-at-qwest-dot-net>" <cb-at-luebke-lands.de>

Hi Antonio, all...

Thank you for your advice. I didn't experience any arcing problems or racing
sparcs.
I think I forgot to mention I am running a magnifier setup. What I feared
was that the higher energy might increase problems with my SRSG to quench
propperly.
Is my assumption right, that the higher power with bigger bansize might
drive energy back into the SG ark and avoid a 1st notch quenching and by
that dramaticaly increasing stress on the cap?
If this is not a problem I think I could increase coupling even more after
insulating the master oscillator coil ( now it's only "air-insulated" ) ant
turning from am reversed cone shape to a helical primary, now that I know
the number of turns needed ( 6 )
I will give that a try as soon as I find the time.

greetings

Christoph




----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, June 14, 2003 3:39 AM
Subject: Re: coupling coefficient


 > Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: "Jolyon Vater Cox by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
 >  >
 >  > Is there really any benefit to be had in increasing the primary
capacitor
 >  > value (and reducing the number of primary turns) when the coupling then
has
 >  > to be reduced to avoid racing sparks -and doesn't the use of a larger
 >  > topload reduce the incidence of racing sparks also?
 >
 > Of course there is a limit, set by the secondary coil construction.
 > After the point where an increase in the primary capacitance leads
 > to racing sparks and the coupling has to be reduced, it's time to
 > make a larger secondary coil, or to use a larger topload. A larger
 > terminal decreases the output voltage, and so reduces the stress over
 > the secondary. The solution of decreasing the coupling to eliminate
 > racing sparks would be most probably wasting the energy excess.
 > The things can be somewhat more complex if the primary is too close
 > to the secondary, and causing distortions in the electric field
 > around the coils, but this generally leads to primary-secondary
 > sparks.
 >
 > Antonio Carlos M. de Queiroz
 >
 >
 >
 >