[SI-LIST] Re: Finding the impedance of a PCB trace
- From: "Graham Davies" <GrahamDavies@xxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 02 May 2005 22:50:19 -0000
--- In si-list@xxxxxxxxxxxxxxx, "Graham Davies" <GrahamDavies@xxxx>
wrote:
> ... why these calculators give
> results that vary by 20% and
> which are more reliable?
I think it is fair to conclude at this point that the first five tools
I used are all way out. They all probably use the exact same algorithm
which gives 41.69 and then they all round it differently. The remaining
tools and results posted here vary much less between them and I find
that variation much less scary.
Graham.
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