6 responses to “EEVblog #301 – LTspice Temperature Sweep Tutorial”

• Icke June 30th, 2012 at 13:36

  Hey Dave!
  When you analyze a circuit like that without time dependence, would you not normally do a DC-Sweep? And for the oscillator I would use a periodic steady state simulation (if you are not interested in the startup), not sure if LTspice can do that.
  This way you can save a lot of simulation time and you have nice graphs drawn over one of the parameters.

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• Richard July 1st, 2012 at 11:37

  Hi Dave – A very interesting tutorial! Would you do one of your videos on Bode plots and phase margin? It would be handy to be able to use LT Spice to investigate the stability of an Op Amp circuit.

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  • Jorge Garcia July 3rd, 2012 at 05:43

    Here’s a neat little article I wrote which uses the step param technique to analyze how a filter response will vary based on component tolerance variations.

    http://www.analog-eetimes.com/en/an-appendix-to-filter-wizard-14-match-point.html?cmp_id=71&news_id=222901245

    Best Regards,

    Jorge Garcia
    Cadsoft Support

    Reply

• Njay July 1st, 2012 at 21:57

  Looking forward to the day Linear open sources LTSpice !

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• phunkz July 2nd, 2012 at 21:03

  Hi Dave,
  very nice tutorial. Thanks for the idea.

  But
  i think in real applications is the problem to get a full and complete lt-spice model of each part – incl. the temperature.

  Could be a nice tutorial: how to get a exact model from scratch – out of the datasheet – for non trivial parts.

  phunkz

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• Sean O'Connor July 20th, 2012 at 00:09

  There are a couple of numerical optimizers available for LTSpice.
  1/ ASCO
  2/ EvoSpice – http://www.evospice.site88.net/evospice/evospice.html

  They automatically adjust component values to try to minimise or maximise some aspect of a circuits behaviour.

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