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Simulate a frequency controlled resistor in PSPICE transient simulation

Discussion in 'General Electronics Discussion' started by kevinlight, May 12, 2021.

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  1. kevinlight


    May 12, 2021
    Hi All,
    I want to simulate a frequency controlled resistor (for example R=1+f) in the PSPICE simulation, some people suggested use GLAPLACE method and I tried that one. However that method works well in the AC sweep simulation. In transient simulation, it fails to control the value of resistor.
    I attached both AC sweep and transient simulation result here. Ac sweep is followed R=1+f. In transient simulation, input source is a 100Hz sinwave, the resistor value (red line) has some really large variation value. And voltage cross the resistor has a phase shift compared with input source.
    Really appreciate if anyone have any thought about that.
    Thank you. Resistor_AC SWEEP.jpg Resistor_transient.jpg
    Resistor_AC SWEEP.jpg Resistor_transient.jpg
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
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