This is a toroid flux density (B) calculator that helps with the selection
of a suitable toroid used in RF applications. For both ferrite and iron
powder toroids, Amidon
recomends not to exceed the values in the following table. Small
variations of these values may exist for the various materials available.
The formula suggested by Amidon is the following:
The crossections Ae in square centimetres of some popular toroid dimensions are:
Enter E in volts RMS:
Enter Ae in square centimetres
Enter number of turns N:
Enter frequency in MHz:
The calculated flux density Bmax in gauss is:
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