What is the best analog simulator according to you

Discussion in 'General Electronics Chat' started by KanchanB, Aug 6, 2014.

  1. KanchanB

    Thread Starter New Member

    Jul 19, 2014
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    Hi
    I have recently installed LTSpice simulator, yet I would like to know which is the best freely available analog simulator.
    Please suggest a good analog simulator. If possible, provide a simulator link and justify why you feel it is a good simulator.

    Thank you.
     
  2. mitko89

    Member

    Sep 20, 2012
    123
    19
    Something better than ltspice and free? Hmmm..
     
  3. BobTPH

    Active Member

    Jun 5, 2013
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    How about you justify why LTSPICE is not sufficient?

    Bob
     
  4. crutschow

    Expert

    Mar 14, 2008
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    LTspice is a very good free simulator and is used by many on these forums. There are other free simulators, but I'm not aware that any are "better". It somewhat depends upon your needs.
     
  5. KanchanB

    Thread Starter New Member

    Jul 19, 2014
    12
    0
    I do not know about circuit simulators.
    I just want to know which all simulators are present to start with.
    But from replies it seems that I am on correct track :)
     
  6. crutschow

    Expert

    Mar 14, 2008
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    You might try reading some of the comparison info here.
    This person also liked LTspice.
     
  7. KanchanB

    Thread Starter New Member

    Jul 19, 2014
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    Thanks Crutschow for link.
     
  8. daviddeakin

    Active Member

    Aug 6, 2009
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    Personally I prefer TIna TI, mainly because the user interface is nicer and more intuitive than LTSPICE.
     
  9. wayneh

    Expert

    Sep 9, 2010
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    How is the component selection? Every time I turn around I have to add components to LTspice, and it's kludgy for that. Not a huge thing, but I'd love something better.
     
  10. crutschow

    Expert

    Mar 14, 2008
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    In my cursory check of Tina it appeared to have fewer components than LTspice.
    Don't know how easy it is to add new ones.
    To get something better than LTspice, it will likely cost you. Free only gets you so far. :rolleyes:
     
  11. shortbus

    AAC Fanatic!

    Sep 30, 2009
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    Looks like/says you can import any Spice model directly from any manufacturer that has a Spice model for their component.
     
  12. dannybeckett

    Active Member

    Dec 9, 2009
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    I've been trying to get an analogue simulator to correctly simulate a decompensated op amp oscillating at gains low enough to make it unstable (i.e. configuring it as a non-inverting buffer with the input grounded), yet no oscillations occur... do any of you know of a simulation package that would accurately simulate this behaviour?
     
  13. crutschow

    Expert

    Mar 14, 2008
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    Most Spice simulators should show that. What's the op amp?
     
  14. dannybeckett

    Active Member

    Dec 9, 2009
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    The one in question is the ADA4637, though I tried with a few uncompensated op-amps in the LTSpice library!
     
  15. crutschow

    Expert

    Mar 14, 2008
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    Try doing the transient simulation with the Skip initial operating point solution checked (UIC) or the Start the external DC supply voltages at 0V checked in the Edit Simulation Command window. Alternately generate a small initial pulse at the input.

    The default mode for simulators is usually to find a stable initial DC solution for the circuit and the oscillations won't then appear until a small (noise) perturbation is added. In the real circuit there's enough intrinsic noise to start an oscillation.
     
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