Power supply simulation error

[lwmar]

Dear all,

I haven't used multisim for many years so please forgive me if I am making some basic mistake. I am trying to simulate this circuit (attached to this message) which was published in a famous electronics magazine, but I am getting an error and the convergence assistant is unable to solve. Perhaps you can suggest some other proved design of a laboratory power supply?

======= SPICE Netlist check completed, 0 error(s), 0 warning(s) =======
Error: Unable to converge during transient analysis. Consider increasing the ABSTOL, VNTOL, and RELTOL options.
Simulation canceled
See convergence help for more information

Clicking on convergence help has no effect. I am running Multisim Power Pro 14.2.

Many Thanks

Best Regards

Marcelo

[lwmar]

As suggested here: https://www.multisim.com/help/simulation/convergence/ I've just tried changing ABSTOL to 1e-6, VNTOL to 1e-3, RELTOL to 0.01, ITL4 to 500 and ITL1 to 500

but I get the same error.

[A.zabihi]

do it like this

[fofango570]

I do not have access to your link due to the notorious sanctions. Could you post your project in 'ms' format?, which is regulated by the rule of good manners when searching for errors in a Multisim simulation.