• Search for:
    How Can We Help?

    Search for answers or browse our Knowledge Base.

    Guides | Models | Validation | Book

    < All Topics
    Print

    Adding Sources

    Created OnOctober 13, 2022
    Updated OnJuly 26, 2025
    By:Tony Golden

    To add a source to a specific wire segment, follow these steps:

    • Right-click on any part of the wire to open the pop-up menu.
    • Select Source / Load / TL (Ctrl + Ins) to open the Source / Load / TL toolbar at the bottom of the screen (Fig. 1).
    • Use the slider to choose the wire segment where the source will be placed.
    • Click the Add Source button to open the Add Source dialog box (Fig. 2).
    • Specify the type of source, its amplitude (rms value), phase, and internal impedance, then click OK.
    • Click Exit to close the Source / Load / TL toolbar.
    Fig. 1: Demonstration of how to add a source to a wire segment.
    Fig. 2: Dialog box for adding a discrete source to a wire segment.

    Tips

    • To customize the default color of sources, go to: Main Menu > Tools > Preferences > Workspace tab.
    • To change the size of the source displayed in the workspace, go to Main Menu > Tools > Preferences > Workspace tab, and adjust the Source Size % setting.
    • Voltage sources have their internal impedance in series.
      To model an ideal (perfect) voltage source, set the impedance to zero.
    • Current sources have their internal impedance in parallel.
      To approximate an ideal current source, use a very high impedance (e.g., 1โ€ฏMฮฉ = 1E6 Ohm).
    Table of Contents