Noncommercial use only at User's risk.
If you are in the USA this may load more quickly from the NorCal design tools page. If you want more information about Amidon toroids, see the ByteMark Corporation datasheets.
Click here to view Java program source. Click here to save the Java .class file.
You may wish to run the applet `off-line' without going through the WWW. You are welcome, provided you acknowledge the source of the code in any publication etc., to copy the Java executable design_toroid.class and run it locally from an html page in your browser. (You can even just save this page if you need an example of how to call an applet! Disable the .gif image of the QSL card if you want to keep everything local.)