cad/nelma 3.2nb3 NetBSD

Nelma is a (command line) tool for numerically calculating various electrical properties of printed circuit boards or similar objects composed of conductors and dielectrics (however code is optimized for circuit board-like geometry).

It is currently capable of calculating capacitances between objects - nets on a PCB. It returns a spice-compatible description of an equivalent circuit of stray capacitances that can be for example used for more accurate circuit simulation. Alternatively it can also produce field data that can be plotted for example with Gnuplot.

Support for calculating resistances existed for a while but was later removed because it didn't receive much testing.

Nelma is available under the GNU General Public License version 2.