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Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

maglev
See magnetic levitation
magnet
any object that can sustain an external magnetic field.
magnetic actuator
any device using a magnetic field to apply a force.
magnetic bearing
a component of a machine that uses magnetic force to provide non-contact support for another component moving relative to it.
magnetic bias
a constant magnetic field on which is superimposed a variable, often sinusoidal, perturbation magnetic field in devices like magnetic bearings.
magnetic brake
any device using a magnetic field to retard motion.
magnetic charge density
a fictitious source of the electromagnetic field that quantifies the average number of discrete magnetic charges (also fictitious) per unit volume. The magnetic charge density is often introduced in problems where duality and equivalence concepts are employed.
magnetic circuit
the possible flux paths within a system consisting of a source of flux (electromagnets, permanent magnets), permeable flux carrying materials (steel, nickel) and non-flux carrying materials (aluminum, air).
magnetic clamp
a device employing a magnetic field to deliver a clamping action.
magnetic current density
a fictitious source vector in electromagnetics that quantifies the amount of magnetic charge (also fictitious) crossing some cross-sectional area per unit time. The magnetic current density is often introduced in problems where duality and equivalence concepts are employed. The direction of the magnetic current density is in the direction of magnetic charge motion. SI units are volts per square meter.
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