From: Paul
Date: Mon, 21 Oct 2002 12:29:50 +0100
Subject: Re: [TSSP] F A N T C: - It's NEW! - and needs some TSSP input
Bart wrote: > However, should I run a second, third, etc.. analysis, L increases > consecutively. Yes, in J_input.js, the diameter to radius conversion is being applied each time, so s_wirad gets smaller and smaller each time you run the analysis. A new version of geotc library is uploaded to http://www.abelian.demon.co.uk/tssp/geotc/ This version 2.2 uses document.getElementById to locate the drawing and plotting applets. If that fails, it tries using document.vprof, etc, so falls back ok to v4 operation. Grey wrote: > For a single-turn coil 20ft in diameter with a 0.1" dia conductor: > The Wheeler formulas yield 30uH and 26.6uH respectively. > The Maxwell 3D 9.0 field simulator yields 51uH. > Does this coil have proportions that incur high calculation errors? No, should come out pretty accurately, around 31uH. > Inside = 240 > Outside = 240.1 Enter half these values, fantc is expecting the radius. The inductance calcs will work happily with r1=r2=any, h1=h2=any, turns=any, and won't mind if the two coils intersect or overlap each other. If coil1 = coil2 in all dimensions, then we expect L1=L2=M and k=1, ie a bifilar winding. The condition r1=r2=any, h1=h2=any, will blow up the capacitance calcs however, because the winding has no surface area. The surface area is pi * (r1+r2) * sqrt((r1-r2)^2 + (h1-h2)^2) which might work as a cross check when tested > 0. Bart wrote: > if I perform a G.remove(coil) and the coil doesn't exist, it will > error out. However, if it could simply return false in that > situation,... Ok, as of geotc 2.2, G.remove( object) now returns true if the object was found and removed, otherwise false. -- Paul Nicholson, --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.