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Java Toroid Design Applet

by Jack Ponton, GM0RWU

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This applet designs a toroid coil. Handbook data for the most usual sizes and material combinations have been included. Less common combinations estimate AL from permeability. Some materials are not available in larger core sizes.

Enter the required inductance in the green box; you must press "enter" at the end of the number. Then select size and material.

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Material and concepts presented on The American QRP Club (TM) website is Copyright 2003 by The American QRP Club, Inc.
These pages are designed and maintained by George Heron, N2APB
Page last updated:  July 9, 2003