
EEVblog #301 – LTspice Temperature Sweep Tutorial
Posted on June 30th, 2012 6 comments
Dave shows how to do temperature and parameter sweeping of your circuit using LTspice6 responses to “EEVblog #301 – LTspice Temperature Sweep Tutorial”

Hey Dave!
When you analyze a circuit like that without time dependence, would you not normally do a DCSweep? 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. 
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.

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.
Best Regards,
Jorge Garcia
Cadsoft Support


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 ltspice 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

There are a couple of numerical optimizers available for LTSpice.
1/ ASCO
2/ EvoSpice – http://www.evospice.site88.net/evospice/evospice.htmlThey automatically adjust component values to try to minimise or maximise some aspect of a circuits behaviour.
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Icke June 30th, 2012 at 13:36