What Are Eddy currents and what is their application?

Eddy currents (also called Foucault currents) are currents induced in conductors when the magnetic flux linked with a solid conductor changes. The change in magnetic flux can cause a circulating flow of electrons, or a current, within the body of the conductor.

The term eddy current comes from analogous currents seen in water.


Electromagnetic braking

Metal detectors

Eddy current adjustable-speed drives

Eddy-current testing

Electric meters (Electromechanical Induction Meters)

Eddy current brakes

Induction heating

Proximity sensor (Displacement sensors)

Traffic Detection Systems

Vending machines (detection of coins)

Coating Thickness Measurements

Sheet Resistance Measurement

Eddy current separator for metal separation

Mechanical speedometers

Safety Hazard and defect detection applications