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A linear induction motor (LIM) is an alternating current (AC), asynchronous linear motor that works by the same general principles as other induction motors but is typically designed to directly produce motion in a straight line. Characteristically, linear induction motors have a finite primary or secondary length, which generates end-effects ...
German, a feasible linear induction motor described in patent form for driving trains or lifts. U.S. patent 782,312: 1935, Hermann Kemper: German, built a working linear induction motor 1945–1949, Eric Laithwaite: British, first full-size working model of linear induction motor
The RTV 31 at Earith, Cambridgeshire, during testing in May 1973. Tracked Hovercraft was an experimental high-speed train developed in the United Kingdom during the 1960s. It combined two British inventions, the hovercraft and the linear induction motor, in an effort to produce a train system that would provide 250 mph (400 km/h) inter-city service with lowered capital costs compared to other ...
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Synchronous linear motors are straightened versions of permanent magnet rotor motors. A linear motor is an electric motor that has had its stator and rotor "unrolled", thus, instead of producing a torque , it produces a linear force along its length. However, linear motors are not necessarily straight.
Induction motors are most commonly run on single-phase or three-phase power, but two-phase motors exist; in theory, induction motors can have any number of phases. Many single-phase motors having two windings can be viewed as two-phase motors, since a capacitor is used to generate a second power phase 90° from the single-phase supply and feeds ...
The phonograph becomes faster and more convenient due to an electric motor. The electric motor brings on the first juke box with cylinders – even before flat disk records were widely available. Thomas Edison discovers thermionic emission. This effect forms the basis for the vacuum tube and the cathode ray tube.
The circle diagram can be drawn for alternators, synchronous motors, transformers, induction motors. The Heyland diagram is an approximate representation of a circle diagram applied to induction motors, which assumes that stator input voltage, rotor resistance and rotor reactance are constant and stator resistance and core loss are zero.