Tag Archives: skin depth

Levitation of a coil

A coil being levitated above a copper plate by eddy current repulsion

Eddy current repulsion can provide enough force to give levitation of a coil. The coil was out of a defibrillator output circuit. Don’t know number of turns but the inductance is 10 mH (I think). It is drawing 6.5 A at 100 V AC to get the lift of about 1/2 inch off a 1/4 inch copper plate. It is tethered like a conventional lifter. The power is over 600 W so gets hot quickly.
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