simulation does not run at all

[jweaver]

I have made up some diodes using the component wizard, such that the diode acts like a perfect switch at 0.7 volts.  For some reason SPICE simulation does not run.   If I include one of these diodes in other circuits, the circuit will not simulate.  So the diode model is the problem.   Any ideas how to get it working?  Attached is the multisim file

Thanks in advance!

[gmack · Accepted solution]

"------ Checking SPICE netlist for perfectbridge - Thursday, February 05, 2015, 11:51:34 AM ------
======= SPICE Netlist check completed, 0 error(s), 0 warning(s) =======
Model 'diodeperfect__perfectdiodes__1': Parameter 'IS' must be greater than zero
doAnalyses: Incorrect use of model parameters
Simulation canceled"

So:  Right click on one of the diodes, select "Properties" - "Value" Tab - Press "Edit model" button - Check "Use default" box for "IS" - Press "Change all 4 components" button - Press "OK".

[jweaver]

Beautiful !   What did you do to to determine that IS value cannot be zero?  Are you using Multisim to find this error?

thanks again....

[gmack · Accepted solution]

Select "View" from top taskbar - check "Spreadsheet View" the window should appear at the bottom of the schematic sheet (unless its been moved elsewhere.  Then run simulation.  Cleck "Simulation" tab in "Spreadsheet View" if it doen't switch to that automatically.

[jweaver]

ok, it was hidden.  Found it.  Thanks again