On Mon, Jan 12, 2009 at 1:36 PM, Joerg <joerg...@analogconsultants.com> wrote: > John Doty wrote: > > Ok, I'll try, it's been a long time since I tested it: > > Take the LM324 as an example. It is a chip with four opamps in there: > http://www.national.com/ds/LM/LM124.pdf > > When you place the first instantation it'll be pins 1,2,3, the next one > 5,6,7 and so on. But all are supplied via the common supply pins 4 and > 11. In gschem you only have two choices. Either you create a library > model that repeats those pins 4 and 11 visibly for all four > instantations or you create the library part with the power pins > detached where none of the instantations show power pins. This can be > practical for auto-connecting digital stuff to a VCC rail but it doesn't > work well in the analog world. Now you could also have pins 11 and 4 as > a separate "fifth" device. Anyhow, neither method looks professional, > neither is industry practice, and all make schematics more difficult to > understand for others. Especially for non-analog guys. >
You can always use two symbols, one with power pins and one without. That's what I do. Regards, Mark markra...@gmail -- Mark Rages, Engineer Midwest Telecine LLC markra...@midwesttelecine.com _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user