Multisim parameter sweep

Discussion in 'General Electronics Chat' started by axon, Jul 28, 2010.

  1. axon

    Thread Starter New Member

    Jul 27, 2010
    I have trouble setting up parameter sweep in multisim. I want to sweep a DC voltage source and watch for magnitude of AC voltage (fixed at one frequency).

    I've already set up sweeping the voltage source correctly, however the output option screen doesn't have any AC voltage probes. It only watches for DC voltages or currents.

    Is there any way to do this?
  2. dsp_redux

    Active Member

    Apr 11, 2009
    Maybe someone can confirm this, but if you do a DC sweep analysis, to program only does a DC analysis. For an AC analysis, the program take the current DC operating point to resolve the circuit. What you'd want is an AC analysis for different operating point. Honestly I don't think Multisim/Spice/etc... can do this. You can always try to change the operating point manually and then doing only AC analysis. Or you can do like me and use a small shell/perl script to modify your netlist iteratively and doing AC analysis for each iteration.