|Magnet Technical Glossary|
Air Gap: A low permeability gap in the flux path of a magnetic circuit. Often air, but inclusive of other materials such as paint, aluminum, etc.
|Length of Air-Gap, Lg: The Length of the path of the central flux line in the air-gap.|
Load Line: A line drawn from the origin of the Demagnetization Curve with a slope of B/H, the intersection of which with the B-H curve represents the operating point of the magnet. Also see Permeance Coeffcient.
Magnetic Circuit: An assembly consisting of some or all of the following: permanent magnets, ferromagnetic conduction elements, air gaps, electrical currents.
Magnetic Flux: The total magnetic induction over a given area. When the magnetic induction, B, is uniformly disributed over an area A, BA. The general equation is B. dA.
Magnetizing Force, H: The magnetomotive force per unit length at any point in a magnetic circuits. Measured in oersteds in the cgs system.
Magnetomotive Force, F: Analogous to voltage in electrical circuits, this is the magnetic potential difference between any two points.
Maximum Energy Product, BHmax: The point on the Demagnetization Curve where the product of B and H is a maximum and the required volume of magnet material required to project a given energy into its surroundings is a minimum. Measured in Mega Gauss Oersteds, MGOe.
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