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[Multisim] Transient time point calculation did not converge

  1. Sep 26, 2015 #1

    etf

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    Hi. I have problem simulating this circuit in Multisim:

    (LTSpice)

    2cwms6h.png

    Here is scheme from Multisim:

    2nhkwvp.png

    When I run transient analysis, I got this:



    ------ Checking SPICE netlist for Design3 - Saturday, September 26, 2015, 10:58:03 AM ------
    ======= SPICE Netlist check completed, 0 error(s), 0 warning(s) =======
    Transient time point calculation did not converge
    Simulation canceled



    Any idea what's wrong? Thanks in advance
     
  2. jcsd
  3. Sep 26, 2015 #2

    etf

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    I tried different models of opamp and I got same error. Here is my version of software:

    2n8detf.jpg
     
  4. Sep 27, 2015 #3

    meBigGuy

    User Avatar
    Gold Member

    cut v4 and v1 in half or set to 0 just to see what happens. Add a 10k to ground on the output to see what happens.

    Do you get a stable dc operating point?

    Have you tried AC analysis?
     
  5. Sep 27, 2015 #4

    etf

    User Avatar

    Solved, I didn't connect power supplies to op amp correctly :)
     
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