From: Paul
Date: Mon, 23 Oct 2000 08:37:13 +0100
Subject: Re: [TSSP] NSVPI - Latter Results
I wrote: > 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 Terry wrote: > It measures 75.1mH It usually is 75.4 but the ground plane > seems to drop it slightly. Thanks Terry, seems reasonable. That'll dispose of some of the remaining error in the simulated amplitude profiles. > 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... Its good that we can see the experimental 'noise' in the readings, shows that we're squeezing the most out of it. > 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. Yes, why does this part of the winding deteriorate more than the rest? Is it perhaps because it's where the current maximum sits during operation, so that it gets the hottest? Cheers, -- Paul Nicholson, Manchester, UK. --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.