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Field Calculations for a Permanent Magnet Dipole



Calculates the field strength for a Steel Dipole

For a dipole, the field within the airgap may be calculated by assuming that the steel yoke has the effect of double the magnetic length of the magnet volume - the field through the airgap volume can then be determined to within respectable limits (+/- 5% or so). Better results are achieved with rare earth materials.

Enter the length of the Air gap (G) along the z-axis, together with the X, Y and Z Coordinates. For more information, please refer to the image shown above.
Unit System
Width (W) [inches]
Length (L) [inches]
Thickness (T) [inches]
Residual induction (Br) [G]
X position [inches]
Y position [inches]
Z position [inches]
Air gap (G) [inches]
Material type
Results
X field component [G]
Y field component [G]
Z field component [G]
Field magnitude (Bm) [G]

The above calculation is for reference only and Dexter Magnetic Technologies Inc. will not be held liable for its use. Please contact us for specific assistance should you require it.