Field magnet

Field magnet refers to a magnet used to produce a magnetic field in a device. It may be a permanent magnet or an electromagnet. When the field magnet is an electromagnet, it is referred to as a field coil.

Although the term usually refers to magnets used in motors and generators, it may refer to magnets used in any of the following devices:


 * Alternator
 * Cathode ray tube
 * Dynamo
 * Electric motor
 * Electrical generator
 * Fusion reactor
 * Loudspeaker
 * Maglev trains
 * Magnetic Separator
 * Magneto
 * Mass spectrometer
 * Metal detector
 * MRI scanner
 * Particle accelerator
 * Read/write head
 * Relay
 * Solenoid
 * Stepping switch
 * Tape head