On Nov 22, 2008, at 4:29 PM, Sean Carter wrote: > So here is the complaint I get from ngspice: ... > Warning: singular matrix: check nodes 2n5245 and 2n5245 >
2n5245 seems an improbable name for a node! This is a clue. In your netlist, I see: > Q1 1 3 2 2N5245 OK, you've run afoul of one of the historical weirdnesses in SPICE. There are two forms of BJT lines: the three node kind and the four node kind. If the fourth argument starts with a number, SPICE thinks it's the substrate node, not the model name But, that line makes no sense anyway. "Q" designates a BJT: for a JFET you want "J". And where's the 2N5245 model? You have to supply that. John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ [EMAIL PROTECTED] _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
