Magnetic core
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A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical, electromechanical and magnetic devices such as electromagnets
Typical EI Lamination.
Ferrite rods are simple cylinders of ferrite that can be wound around.
A Regular Pot Core
On the left, a non-adjustable ferrite rod with connection wires glued to the ends. On the right, a molded ferrite rod with holes, with a single wire threaded through the holes.
Electromagnet
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An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of copper wire wound into a coil. A current through the wire creates
Homemade electromagnet with 9V battery
Closeup of a large Henry electromagnet
Industrial electromagnet lifting scrap iron, 1914
Laboratory electromagnet; produces 2 T field with 20 A current