A.9 Inquiring Complex-Valued Node Voltages and Terminal Quantities

This section shows how several mixed-mode AC quantities are inquired.

Curve
{
   file = if (~resonant, "res_out", "band_out");
   Response
   {
      +mhz = ~Solve.frequency / 1 MHz;   // will become dimensionless

      +outAc    =     V("out", ac = yes);
      +outAbs   = abs(V("out", ac = yes));
      +outArg   = arg(V("out", ac = yes));

      +outAbsdB = 20 * log10(value(outAbs));

      +acVc     = output("C", "acV");
      +acIr     = output("R", "acI");
   }
}

The V function has been extended to handle also complex-valued node voltages. In that case, the user has to set the optional parameter ac to yes. Several built-in functions of the input-deck are used for further calculations finally resulting in the logarithmic value. While the output function remained basically unchanged, it can be used to inquire complex-valued quantities from devices in a straightforward way.

The built-in input-deck functions abs, arg, realpart, imagpart, log10, value (to get the dimensionless value) etc. can be used to transform the actual simulator output to common output formats, such as dB.