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Sensor or pickup coils - these are used to detect external time-varying magnetic fields; Inductive sensor - a coil which senses when a magnet or iron object passes near it; Recording head - a coil which is used to create a magnetic field to write data to a magnetic storage medium, such as magnetic tape, or a hard disk. Conversely it is also ...
A superconducting magnet is an electromagnet made from coils of superconducting wire. They must be cooled to cryogenic temperatures during operation. In its superconducting state the wire has no electrical resistance and therefore can conduct much larger electric currents than ordinary wire, creating intense magnetic fields.
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire (likely copper) wound into a coil. A current through the wire creates a magnetic field which is concentrated along the center of the coil. The magnetic field disappears when the current is turned off.
The 50 non-planar coils are used for adjusting the magnetic field. It aims for a plasma density of 3 × 10 20 particles per cubic metre, and a plasma temperature of 60–130 megakelvins (MK). [1] The W7-X is optimised along the quasi-isodynamic principle. [10] The main components are the magnetic coils, cryostat, plasma vessel, divertor and ...
The MC design is again a tiny electromagnetic generator, but (unlike an MM design) with the magnet and coils reversed: the coils are attached to the cantilever, and move within the field of a permanent magnet. The coils are tiny and made from very fine wire.
This helps with field confinement, usually a problem in the design of magnetic structures. Thus they have a surprising number of applications, ranging from flat refrigerator magnets through industrial applications such as the brushless DC motor , voice coils , [ 7 ] magnetic drug targeting [ 8 ] to high-tech applications such as wiggler magnets ...