For some time now I have had trouble with the INDUCTOR_COUPLING element in Multisim. I would place it after placing my inductors then adjust the coupling inductor's settings for the inductors to be coupled and the k constant. Every time I would get a netlist error.
Tonight I found out why: Using INDUCTOR_RATED inductors with INDUCTOR_COUPLING will result in a netlist error. Use a standard inductor instead then modify it from the Properties pane.
Never ever use INDUCTOR_RATED if you plan to couple inductors!
For over a year, I have used National Instruments' circuit analysis and design software: Multisim. I have v12, educational version.
Our current homework is about mutual inductance. In class, we received a quick demonstration on how to do couple inductors in v13:
- place your inductors, but remember the dot's location is on the left of the inductor when you first place it, so rotate it to position the dot elsewhere
- under "Transformer," choose COUPLING_INDUCTOR and place it off by itself, as it is not connected to your circuit
- open that element's properties (Ctrl+M)
- under "Value," fill in the fields "Coupled inductors list" (by name, like "L1,L2") and "Coupling coefficient"
- finish your circuit
However, once I got home, I couldn't find COUPLING_INDUCTOR, rather COUPLED_INDUCTOR, which is not the same. The Help for v12 says COUPLING_INDUCTOR exists, but it apparently does not, perhaps an intentional omission in the academic version. Eventually I got a v12 file with a COUPLING_INDUCTOR element from someone else, so I've been using that file as the template for my assignments. It was very aggravating to learn that cutting and pasting the element into a new file resulted in a netlist error.
One thing I've done is mark the mutual inductance dots by using colored asterisks placed as text. Multisim seems not to offer a way to display the dots, so that is my solution.
This is what COUPLING_INDUCTOR looks like:
I did write National Instruments about the netlist errors I kept getting when trying to link inductors before receive the COUPLING_INDUCTOR from someone. Their technical support should get back with me Monday.