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Re: Fasthenry program does much more than I originally thought
Original poster: "rob by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rob-at-pythonemproject-dot-com>
Something I forgot to mention. This program is very fast. The
~8000segment run only took 140sec on my 1Ghz P3 laptop. Thats
16segments/turn with 8.25in long winding of #26ga wire, I believe. And
sweeping frequency over 10 points does not result in a 10x increase in
time. Maybe about 20% more time. It evidently stores a kind of Green's
function for the next freq step. As soon as I can learn enough, I will
try out the ground plane option, then compare the impedance and/or spice
simulation I get to a measurement using an Agilent 8573E Network
Tesla list wrote:
> Original poster: "rob by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> I've been playing with the fasthenry program today, and I had no idea
> that you could do so much with it.
> It will model inductors above a ground plane, model coupled inductors,
> and generate impedance matrices. Connections can be made to the ground
> In fact, the Unix version has a program that converts fasthenry output
> into several types of Spice models. There is also a provision to
> generate current info for Matlab viewing. And there is a program which
> converts the input file into a Postscript picture.
> Here's the rub: I'm modeling a coil with 8000 segments (50Mb of
> memory). You need a computer program to generate the input file. This
> weekend I will try hacking a Python program that might work for
> coilers. It might take a couple of weeks to do this, but I'll try. I
> already have the code for simple cylindrical coils. I have compiled it
> for Windows also with the MingW compiler. If anyone wants it, email me.
The Numeric Python EM Project