Hello. I am busy now with NGSPICE, but have a question, one of the things I can do in pspice is plot the power as a function of resistance P(RL). We do this by creating a resistor, setting its value to "{RL}", adding a special part named "PARAM", setting "R2=2K" as name1/value of the PARAM part, then running a DC sweep using "Global Parameter" and "RL" as the name.

We can then plot things with respect to RL, such as -V(R2)^2*I(R2), where R2 is the resistor having the value {RL}. It's the graph of maximum power transfer, so it looks like a horked -x^2 graph.

I have found nothing comparable in ngspice. Is this correct?

I have included the pspice circuit file below, changing ony the .INC with the file data that was included.

Willem