Use this when creating a Part to define the Part as a Saturable Transformer or Saturable Inductor device.
Use this on a Saturable Transformer component in a schematic design to change its parameters, or to replace it with a part using a different Saturable Transformer definition.
These parts have their Spice Type Built-in Function set to Saturable Transformer / Inductor.
For more information on how the Pulsonix-Spice Simulator handles saturable devices, see the Saturable Magnetic Components section.
Shortcuts
Default Keys: F7
Default Menu: Simulation
Command: Edit Spice Value/Model
How To Add A Saturable Transformer or Inductor
There are various ways to add a saturable transformer or inductor device to a Schematic Design:
- From the Parts toolbar, click on the Magnetics pop-up to display the toolbar. Click on the Saturable Transformer button.
- From the Parts Browser, click on the Spice Category to display the Passives parts. Drag the Saturable Transformer part name into the design. Note: This method may not work if you have changed the part categories.
- Use Component from the Insert menu to add the Part called Saturable Transformer from the SPICE library.
Whichever method is used, you should be presented with the Define Saturable Transformer / Inductor Dialog described below. This works because the part named “Saturable Transformer” has a blank function definition which forces the dialog to be given to get the required definition from you.
How To Define A Saturable Transformer Or Inductor
In a Schematic Design, select the Saturable Transformer device(s) that you wish to change. Press F7 or use the Edit Spice Value/Model option from the Simulation menu, or from the shortcut menu.
From a Parts Library edit the required Part. Press the Edit Spice button on the Details tab. Make sure the Built-in Function is set to Saturable Transformer / Inductor and press the Edit Definition button.
In both cases the following dialog will be displayed:
Configuration
Specify the number of windings required for Primaries and Secondaries. If you just want a single inductor, set Primaries to 1 and Secondaries to 0
Windings
Specify turns ratios in the Windings section. Select each winding you wish to define using the Winding drop down list, and enter its required Ratio To Primary 1 in the edit box provided.
Specify the number of turns for the Primary and Coupling Factor. The coupling factor is the same for all windings. You can define different coupling factors for each winding by adding ideal inductors in series with one or more windings. In some instances it may be necessary to add coupled inductors in series.
Core
Specify the core characteristics in the Core section. A number of standard core sets are pre-programmed and can be selected from the Select Core Type list at the top. If the part you wish to use is not in the list or if you wish to use a variant with, for example a different air gap, you can manually enter the characteristics by clicking on the Manual Entry check box.
The values you need to enter are shown below. These can be obtained from manufacturer data sheets.
Core Material - Choose from list of standard core materials.
Ae - Enter the effective area, using the Units specified
Le - Enter the effective length, using the Units specified
Ue - Enter the relative permeability
Changing the Symbol
If creating a Part, make sure the chosen Primary and Secondary counts match the Symbol that is used by the Part.
If editing a component in a schematic design, pressing OK with changed Primary or Secondary counts will force the component to be replaced with a Part from the Library that matches the new specification. If no suitable Part exists, an error message will be given giving details of the Part that will need to be created.
Editing Multiple Components
If any of the fields are set to
Related Topics
Edit Device Type | Old Method | Saturable Magnetic Components