Electropermanent magnets utilize permanent magnetic material surrounded by an electrically powered coil. To energize an electropermanent magnet, a momentary pulse of D. C. power is applied to the magnet's coil in order to charge the permanent magnetic material within. Once energized, the electropermanent magnet does not require a constant source of power to retain the lifted steel coil. To release the steel coil, a reverse pulse of D. C. power is applied to the magnet's coil. The Electropermanent magnet design tends to excel when the steel coil's edge stagger is kept to a minimum.
Special Adaptations (Standard Circular, Rectangular, and Bi-Polar)
Able to prevent "telescoping"
Less storage space required
Transport requires less manpower
