How to do a PSPICE large signal analysis?

Discussion in 'Homework Help' started by bumclouds, Jun 4, 2009.

  1. bumclouds

    Thread Starter Active Member

    May 18, 2008
    Hey guys,

    I've had an assignment which asks me to design a circuit in PSPICE, fabricate the real thing and test it.

    In the assignment instructions it says this:

    · Complete PSPICE simulation, including the following (30 %):
    1. DC analysis
    2. Frequency response (using .ac)
    3. Large signal analysis (using .tran) including distortion analysis.

    DC analysis I have under control. The same with frequency response.

    Large signal analysis. What is this? And how to I simulate this in PSPICE?


    PS: If you're interested: here is my schematic.


    I'm not sure if this is right, but I did a "transient response" using the default settings and the following graph was produced:


    Is the transient a single impulse? Is it a step? What is it?
    Last edited: Jun 4, 2009
  2. bumclouds

    Thread Starter Active Member

    May 18, 2008
    Sorry to double post.. But I think I may have it.

    I used VPULSE as a source this time. With:
    TD = 0
    TR = 5ns
    V1 = 0
    V2 = 1V
    everything else blank.

    And the output plot is:


    But is that "Large Signal" and is that what they're after do you think?