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ACTIVE NEGATIVE INDUCTOR BASED ON MAGNETIC FLUX D. D.
ACTIVE NEGATIVE INDUCTOR BASED ON MAGNETIC FLUX D. D.

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Topic 5 - public.iastate.edu

... a nonzero field. This does not mean, however, that a current will be induced! A current is induced only when the flux within the loop is changing. There may be a very large magnetic flux in the loop, and yet no current flowing within the loop if that flux has a constant value. The word "flux" is sug ...
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Degaussing prior to welding

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... basement rock will still be subject to quite a large local field. Because the sources of the local field are near or even at the surface, it can vary greatly within a small distance. Sometimes there are appreciable differences at points only a few feet apart. Unlike the main field and the external f ...
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... The superior performance of a dual-pixel magnetic position sensor with differential sensing has been demonstrated in the laboratory. The test described below compared the measurement results from an automotive position sensor module containing a dual-pixel sensor with another automotive module which ...
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... Now as due to motion of conductor AB, the free electrons in it due to field B will experience B a force along AB towards A and hence end A will experience a force along i.e., at a lower potential than end B. So end B will be at higher potential. Note : Here the conductor AB (through the phenomenon o ...
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... in Great Britain and in Germany. The chief electrician of Edison Central Station, Pearl Street, New York City, J. W. Lieb visited the Ganz Works in 1885 and was filled with enthusiasm; he urged the Edison Electric Light Company to buy the patent rights to manufacture the Ganz transformers in the Uni ...
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Magnetic core

A magnetic core is a piece of magnetic material with a high permeability used to confine and guide magnetic fields in electrical, electromechanical and magnetic devices such as electromagnets, transformers, electric motors, generators, inductors, magnetic recording heads, and magnetic assemblies. It is made of ferromagnetic metal such as iron, or ferrimagnetic compounds such as ferrites. The high permeability, relative to the surrounding air, causes the magnetic field lines to be concentrated in the core material. The magnetic field is often created by a coil of wire around the core that carries a current. The presence of the core can increase the magnetic field of a coil by a factor of several thousand over what it would be without the core.The use of a magnetic core can enormously concentrate the strength and increase the effect of magnetic fields produced by electric currents and permanent magnets. The properties of a device will depend crucially on the following factors: the geometry of the magnetic core. the amount of air gap in the magnetic circuit. the properties of the core material (especially permeability and hysteresis). the operating temperature of the core. whether the core is laminated to reduce eddy currents.In many applications it is undesirable for the core to retain magnetization when the applied field is removed. This property, called hysteresis can cause energy losses in applications such as transformers. Therefore, 'soft' magnetic materials with low hysteresis, such as silicon steel, rather than the 'hard' magnetic materials used for permanent magnets, are usually used in cores.
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