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Convergence Issues in MC Transient simulation

Hi,

I have a simple two diode connected npn bjt circuit where both the npns are biased thru their emitters. But when i run MC transient simulations for the difference in theri emitter base voltages I get convergence errors. Out of 200 runs only 3 are simulated. The problem is likely to be with the 'Transients Options' form. When I press 'skipdc' option to yes I get no convergence issues but a lot of transients at the DC. When I press 'skipdc' to no I get convergence issues. I have tried many things on the transient options form like 'Integration Methods Parameters', Iteratio' option, 'cmin' etc but to no avail. I need solution to this convergence issue. Output log file says to loosen tolerance like 'iabstol' on options paramter, but I can't find it anywhere.

I am not getting any convergence error for a single run normal Transient simulation but only for Monte Carlo (MC)!

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Flyyn Rider over 11 years ago

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Flyyn Rider over 11 years ago

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