Yang Hawk wrote: > have a question about why my current flow is negative: > my circuit net list here: > diode > vs 1 0 dc 1v > d1 1 0 dnorm > .dc vs -0.8v 0.7v 0.004v > .model dnorm d(is=1e-14) > .probe > .end > > and in ngspice, I execute, > plot i(vs) > > the plot graph is shown that the current is negative > > I find the answer from ngspice/spice3f5 user's manual: > I(VXXXXXXX) > > specifies the current flowing in the independent voltage source named > VXXXXXXX. Positive current flows from the positive node, through the > source, to the negative node. For the ac analysis, the corresponding > replacements for the letter I may be made in the same way as described > for voltage outputs. > > > so, no doubt, the current is negative. But why the spice is so designed? >
why not? > and How could I check current between any two nodes? I'm assuming you mean "how could I check current in any branch". You can insert a zero volt DC voltage source in any branch and monitor the current through it. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
