External Circuit Connections

You may define transient current sources and transient voltage sources using the Maxwell Circuit Editor. This allows you to define an external circuit netlist which can be connected to the 2D model to act as a source in the time domain.

To define an external connection, the general procedure should be followed:

1. Create sheets objects to be used as terminals.
2. Assign the Coil Terminal excitation to the sheet objects.
3. Create a Winding, provide a unique name for the winding, and specify External Circuit as the winding type. Select either Solid or Strand as the type of conductor for the external connection.
Warning: You cannot mix solid and stranded sources in the external circuit.
4. Choose Winding, and add the Coil Terminals to the winding using the Add Terminals dialog box.
5. Launch the Maxwell Circuit Editor from the Windows Start menu.
6. Add a Winding element to the circuit with the same name as given to the winding in the Maxwell design.
7. Add additional circuit element to the schematic to create the external source circuitry for the winding.
Note: The transient solver accepts only the following subset of elements available in Schematic Capture: resistors, inductors, capacitors, diodes, switch on voltages, switch on currents, current sources, voltage sources, current meters, and voltage meters.
8. Export the circuit to a netlist, and Save and Exit the Maxwell Circuit Editor.
9. In the Maxwell design, use the Edit External Circuits command to Import the netlist.

The external circuit is now ready for use in the Maxwell design.