From: "Terrell W. Fritz"
Date: Sun, 22 Oct 2000 14:41:02 -0600
Subject: Re: [TSSP] NSVPI - Latter Results
Hi Paul, It measures 75.1mH It usually is 75.4 but the ground plane seems to drop it slightly. I also note in your graph at: http://www.abelian.demon.co.uk/tssp-data/nsvpi2210b.gif That at turn 20 I stopped for about two hours and came back. I go the impression that something had drifted a tiny bit in the test equipment. Signal level, scope calibration... Not sure what but if I look at the graph really hard I can kind of see it. No big deal however... I also looked at sections 5-9 on the coil and this is the area that was messed up a bit when the coil shrank due to dry air and the windings came loose. I tried at the time to replace them in position but... This probably explains the jumping in that area of the graph. I can't explain the dip at turn 17. I did that one twice since it seemed odd at the time and got 2.40 and 2.44. The windings seem fine in that section... The slight shake around section 24 are the first measurements I took and things were a little "unpracticed". I am still amazed at how well all this is working!! I hope to do the top loaded case today... Cheers, Terry At 05:54 PM 10/22/2000 +0100, you wrote: >Terry, > >If you get the chance, can you measure the inductance of >the coil in-situ. I think it will be a little higher than >my simulation input value of 74.1mH since there will be >less eddy coupling to the partial ground plane than there >was to the continuous ground plane used in august. > >I can then re-run the simulation to get a closer match >to this particular setup. > >Cheers, >-- >Paul Nicholson, >Manchester, UK. >--
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.