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# Re: tesla-d Digest V2006 #377

Original poster: Greg Leyh <lod@xxxxxxxxxxx>
Hi Gerry,

`Yes, the TSSP is primarily the work of Paul Nicholson, Terry Fritz
``and others. Very comprehensive work.
`
-GL
Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
Hi Greg,

`I chose 9 segments only because it evenly goes into 36 and it reduced
``my chances of making an error when positioning the segments using
``JavaTC :o)))) If you choose more than 9 segments and want to have
``every combination of coupling, you will need to enter into the
``simulator the n(n+1)/2 coefficients but you dont need to do as much
``work finding their values using JavaTC. For example, all pairs if
``secondary segments with the same spacing between the two segments
``will have the same coupling regardless of where they are located on
``the secondary coil. I didnt assume this at first, so I did all
``combinations but this turned out to be the case.
`

`The rise time of the waveforms from the simulation was 2us and
``propagation time from bottom to top was 6us. Any signal edge would
``span 12 inches of coil so a 4 inch segment seems to be a fine enough
``resolution.
`

`The simulation seems to predict high stress points from the presumed
``overcoupling of my coil located where my coil actually broke out
``which was a good correlation so I tried to see if the simulation
``would predict higher stress points if the coil was miss tuned. It
``seemed to, although I havent completed this experiment yet. It did
``show the frequency splitting that coupled resonant circuits can have
``and this caused me to revisit the tuning a bit closer to make sure I
``was really on a properly tuned resonant point. I will report more as
``I finish. Thankyou for the link. I will take a look when time
``permits. This link points to the work of Paul Nickelson??
`
Gerry R