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PSpice for TI: How to Add a K Statement for an Inductor Coupling Part

Thomas Foxcroft
Expert 2986 points

PSpice for TI Version: 17.4-2023-S009

I want to add a transformer to my design, but I have encountered a barrier. I understand that there are at least three methods for adding a transformer: 1) add the part from a library, 2) create the part through two or more inductors and then combing them them through a coupling part and K Statement, and then 3) using the Transformer Modeling Application. I'm interested in using the second method, using a coupling part with a K Statement. The coupling part is typically in the form of a KBreak or K_Linear symbol. The former symbol is in the magnetic library, while the later is in the analog library.

A "K Statement," also called a Mutual Inductance Statement, is typically written into a dialog box called "Edit Text on Schematic" with the Spice Directive radio button selected.

In this version of PSpice for TI, I cannot find a control for opening that dialog, and the help documentation seems to not have that information.

Can somebody please tell me how to access that dialog or how to add such a statement in this version of PSpice for TI?

  • 0
    Expert 2986 points

    Twenty views, and so far nobody knows? Great!

    I couldn't find any control that gives me access to such a dialog, so I studied the property sheets. I found the answer there. Here's the solution for coupling two inductors named L1 and L2.

    1. After placing the K_Linear part onto the schematic, double-click on it to view its Property Editor tab. This part is used for coupling two or more inductors.
    2. From the Property Editor menu, click on Pivot to view the properties as rows in a table.
    3. From the Property Editor menu, click on the Filter by drop down list and select <current properties> to include the Coupling and the L1 through L6 Inductor properties. If this is not selected, the coupling properties will not be presented to you. This was the barrier I had met.
    4. In the Coupling property value textbox, type in a value from zero to 1.
    5. In the L1 property value textbox, type in the identifier for the the first inductor. In this case, it's L1.
    6. In the L2 property value textbox, type in the identifier for the the second inductor. In this case, it's L2.
    7. Press Crtl-s to save your work.

    Now you can produce the properly notated netlist by going to the Project pane, selecting the project's design file, then from the Main menu, click on PSpice, and then select Create Netlist.