.. _transformer_builder:

**Transformer Builder** tab
===========================

In the UI's upper left corner, click the cube icon to display the **Transformer Builder** tab.

.. image:: ../_static/pyetk-toolkit-builder.svg
    :width: 800
    :alt: Transformer Builder tab

In this tab, specify transformer information:

- Core type
- Core dimensions
- Bobbin type
- Bobbin dimensions
- Winding data
- Excitation data

Use the **Settings** pane on the left side of the **Transformer Builder** tab to specify Maxwell analysis settings:

- Number of passes
- Percentage error
- Maximum number of passes
- Frequency sweeps