Mail Archives: geda-user/2016/09/19/18:20:04

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Date: Mon, 19 Sep 2016 15:18:26 -0700
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] pin number and pin sequence of diodes
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References: <20160919070050 DOT 2524 DOT qmail AT rahul DOT net>
<B1030B79-F95C-4E36-A435-0CA29308BEB3 AT noqsi DOT com>
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From: conover AT rahul DOT net (John Conover)
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Thanks, John. Just flipping the PINSEQs in the sym files seems to work
fine, FYI. Very powerful.


BTW, your answer should be in the documentation ... someday. I spent a
couple of hours finding why a circuit didn't work as expected using
the default library. At least your answer will show up for anyone
antagonizing the Google.

John Doty writes:
> On Sep 19, 2016, at 3:00 AM, John Conover <conover AT rahul DOT net> wrote:
> > 
> > Unless I am mistaken, the PINSEQ is reversed in many of the library
> > diodes.
> > 
> > Spice requires the anode node followed by the cathode node, as
> > determined by the PINSEQs, (these, I think, are reversed in many of
> > the diodes in the library.)
> The library symbols are starting points, developed for a variety of purposes by a variety of people. Some had no idea what the SPICE back ends need. In general, you need to make copies and tweak the symbols for *your* project.
> The gnetlist back end at gives you much more control of SPICE netlisting than the “spice” and “spice-sdb” back ends. You can use the standard library symbols (with an attached attribute) with this back end.
> John Doty              Noqsi Aerospace, Ltd.
> jpd AT noqsi DOT com


John Conover, conover AT rahul DOT net,

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