Re: Impedance change in SST Magnifier

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

Original poster: "John Tomacic by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla_ownz_u-at-hotmail-dot-com>

Hi Gary,
Some basic information about my system can be found at:

http://www.angelfire-dot-com/electronic/teslacoil/

The web site was created recently, and will eventually have a lot more 
information. In meantime, if there is anything specific in addition that 
would help please let me know.

John




>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: Impedance change in SST Magnifier
>Date: Wed, 26 Dec 2001 19:27:05 -0700
>
>Original poster: "Gary Johnson by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><gjohnson-at-ksu.edu>
>
>John:
>
>I have not seen this effect on my solid state system, but have thought that
>something like this might occur under the right conditions. Are the details
>of your system available somewhere?
>
>Gary Johnson
>
>At 11:00 AM 12/26/2001 -0700, you wrote:
> >Original poster: "John Tomacic by way of Terry Fritz 
><twftesla-at-qwest-dot-net>"
><tesla_ownz_u-at-hotmail-dot-com>
> >
> >
> >Hi everyone, Happy Holidays!!
> >
> >I have a question about an observed impedance change in the operation of 
>my
> >soild state magnifier coil. While operating in CW and interrupt modes the
> >impedance of the coil was constant at Fres for various power input levels
> >below 3 Kwatts. I changed the drive transformer to increase the power to 
>the
> >magnifier coil to about 3.7 Kwatts based on the previously measured
> >impedance.  Everything was as expected in CW operation, with the 
>impedance
> >constant as with lower power levels.  However, when running the coil in
> >interrupt mode, at Fres, under certain conditions (ingterrupt duty cycle
> >about 30%, frequency 107 Hz)the impedance of the magnifier dropped to 
>less
> >than half of what it was before, then slowly oscillated between the two
> >values at about one to 3 hertz.  At this low impedance level the 
>controller
> >was pumping about 10 K watts peak into the magnifier, producing 24" arcs 
>to
> >a hand held aluminum rod (see picture attached).  Does anyone have an
> >explanation as to what's happening, and has anyone else observed this?
> >
> >http://hot-streamer-dot-com/temp/DSC00008m.jpg
> >
> >John Tomacic
> >
> >
> >
> >
>
>
>




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