From: "Terrell W. Fritz"
Date: Tue, 21 Nov 2000 21:17:57 -0700
Subject: [TSSP] E-Tesla6.11
Hi All, I have been working on E-Tesla6 and squeezed another 0.26% accuracy out of it. OK... Maybe I work on this stuff a little too much ;-)) The latest version of the moment is at: http://hot-streamer.com/TeslaCoils/Programs/E-Tesla6.zip There are some interesting things I have noted. I was trying to track down some odd errors and I just tried modeling spheres in space. The program was off significantly!! I dug into some of the code and found that the ET summation factor was off by SQRT(3/4). I fixed that and magically the Lfac (an inductance fudge factor) for the terminated coil case turned into 1.00. Also, the calculated capacitance and the input inductance now can be used to calculate the right Fo frequency again. So the terminated coil case now has no fudge factors involved with it, the program finally does sphere tests, and the capacitance and inductance once again calculated the right frequency. I have now pretty much integrated in the changes Paul's TSSP and my test results demanded and everything is pretty much happy again. However, the "bare" coil's inductance still seems to be about 93% of the measured value. With everything else working so well, I think this effect may be real. Since the current is so low toward the top of the coil, we may indeed be loosing some effective secondary inductance compared the measured value. Perhaps progress in the TSSP project will pin this down more. I think the terminated coil voltage profile will stay pretty constant with different H/D ratios and stuff. However, I would not be surprised if the profile for different H/D bare coils will vary a bit. I also posted the most accurate high-res field plots yet for my coil using all the latest and greatest theory. http://hot-streamer.com/TeslaCoils/Misc/V-S.gif Sorry to keep changing the program all the time, but trying to stay up with the latest knowledge on which this program depends and things have been changing drastically lately! Cheers, Terry
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.