Problem of Convergence HB in co-simulation EM-circuit

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  I don't have a Multisim, so I can't see your circuits but have a few general comments.

  1 MOSFET driver models often use switches and these can lead to problems of convergence. This is because the action of switching introduced a strong nonlinearity in the model.  I wrote my own template using transmission lines for delay and nonlinear dependent sources with functions tanh rather than hard switches.

  2. If you do not need to model the detailed driver behavior, using pulse sources with up/down times as long as possible without changing the behavior of the MOSFET can be a better choice.

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  AIDS convergence
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  * set = RELTOL ABSTOL * Ismall
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  will have a minimal effect when added to the circuit.
  * models of semiconductor should have resistance non-zero
  * RS (diode), RC (BJT), RD, RS (FET)
  * Make ITL1 = 500 (limit of iterations DC OP)
  * use. NODESET
  * Use source stepping ITL6 = 500
  * Convergence transitional AIDS
  * Add capacitance of device models:
  * The CJO (diode), ECJ, CJC, SYC (BJT), CDG, CGS (JFET)
  * CGDO, CASE CGBO, CBD, CBS, CJ, CJSW
  * increase ITL4 = 40
  *

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  Thank you!

  Santiago.

  Hello

  It is a problem with the OS 6.  I've posted about this before here:

  http://supportforums.BlackBerry.com/T5/Java-development/reading-and-writing-file-on-torch-9800/TD-p/...

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  https://www.BlackBerry.com/jira/browse/JAVAAPI-1513

  Good luck!

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  A quick glance, it seems that you have your power supply reversed. VEE should be less supply, SCR should be positive.

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  The President complied,

  I'm trying to stimulate these circuits in Multisim. .but I don't get the good output.in oscilloscope.../technotrix oscilloscope.

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  NUPSSHAH,

  I took a quick look at these circuits.

  In "wave sine generation.ms12" U1A, you pin 4 (V +) cable to Gnd and PIN 11 cable to + 6V (while all the other operational amplifiers are opposed).  Is - this intentional or your circuit isn't correct?

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  Kind regards

  Saami

  Try to set your initial conditions more zero on the changes described above:

  

  It seems that this circuit is particularly sensitive to the problems of convergence.

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  Hi all

  This is my first post here, and I am familiar with Multisim on a basic level. I created my sim file based on a pattern that I was not designed. I get the error message:

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  2. Schema of the source GIF
  3. Multisim file

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  Moreover, it is a pulse width modulator used to keep the constant running rms.

  Hello

  I took a glance at your circuit, and it seems that the question of convergence is in the template that you use.  The model is a 3-terminal op amp; in other words, only the input and output pins are modeled and not the power supply.  This leads to problems of in your circuit in question because you have some operational amplifiers in open-loop configurations expected that output will be cut to supply voltages.  But because the power supplies are not modeled, the output is not be truncated, and so very great tension values produce outputs.

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