LM2902 "not enough nodes" error
I'm using Multisim 11.0.278.
I designed an EQ circuit that includes the model LM2902N. The first time I tried to simulate it, the netlist generator complained that the model should have a node called "VS-", but the netgen couldn't find it because it's actually called "GND".
I renamed the GND pins VS- and saved the corrected model in my User component library. Then I replaced the old LM2902s with the new one.
Now, when I try to simulate, I get a different error saying "not enough nodes found" in the LM2902.
How do I fix this?
The schematic in question is attached.
Attachments:
EQ.ms11 262 KB
replacing the LM2902N components in your circuit with the equivalent in the database gave me no netlist issues and solved any that were in your circuit.
The likely cause of your current issue is the model mapping. If the model nodes are not properly mapped within the model tab of the component, you will get the not enough nodes error.
This can be fixed by going to.
1) Tools > Database > Database Manager
2) Locate you component in the components tab and select "Edit" (the component needs to be in your user or corporate database)
3) Once in the model tab of the component editor, ensure the table is shown.
If there are any pins showing NC, that is likely the cause of the not enough nodes found error. You will need to add the mapping for the NC node.(the order depends on the model in use and is usually written at the top of the model)
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