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	Thu, 15 Oct 2015 03:20:57 -0700 (PDT)
Date:	Thu, 15 Oct 2015 12:20:50 +0200
From:	"Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	[geda-user] Design rule, suitable attributes at least for current
Message-Id:	<20151015122050.df4967802d7bf0e178ff2726@gmail.com>
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Reply-To:	geda-user AT delorie DOT com

There have been discussions lately about attributes on pins and nets. On commercial tools I have used it is usually possible to specify minimum, standard and maximum value for width of traces.

If current is specified instead of width it would be possible to use a mapping of currents to trace width which may be different for different layers and I actually think this approach would actually outperform the commercial tools.

If current range which will be negative for opposite direction is specified for pins it would be possible for tools automatically calculate current range for all segments in circuit. Then maximum rms value have been calculated this could be used to automatically map currents to trace widths.


Regards Nicklas Karlsson

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