DC Opposite Pole Electromagnets

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  • Measurement of electron effective mass ratios in Hg1-xCdxTe for 0.20 ⩽ x ⩽ 0.30 between 77K and 296K
    … mid infrared beam of a Mattson Research series 2 Fourier transform infrared spectrometer (FTIR) is directed through a polarizer, through a hole drilled in one pole of a 12.4 KG dc electromagnet , the sample, the opposite pole of the magnet, an …
  • An optical alternative to the hall test
    … a Mattson Research Series 2 Fourier transform infrared spec- trometer (FTIR) is directed through a polarizer, through a hole drilled in one pole of a 12.4 KG dc electromagnet , through the semiconductor sample, through the opposite pole of the magnet, through …
  • Large-Scale Scientific Computing
    We consider a problem of optimal shape design of pole heads of a direct current ( DC ) electromagnet , which is depicted in Fig. 2 (a), while we simplify the geom- etry so that only two opposite pole heads and coils are present.
  • Teach Yourself Electricity and Electronics, 5th Edition > Magnetism
    If you bring a permanent magnet or DC electromagnet near either " pole " of an AC electromagnet, no net force results from the AC electromagnetism itself, because equal and opposite attractive and repulsive forces occur between the alternating magnetic field and …
  • Wind Energy Engineering > Basics of Electricity and Generators
    Perfect alignment of stator and rotor poles means that the angular speed of stator’s magnetic field is the same as the angular speed of rotation of the rotor and the opposite poles of stator and rotor face each other (radial alignment). The magnitude of Eg is determined by the strength of the permanent magnet or the DC excitation current of the electromagnet .
  • Design and Analysis of a New Hybrid Excited Doubly Salient Machine Capable of Field Control
    The two coils on the diametrically opposite stator poles are connected to form an armature winding, and the two relevant windings are also connected in series to form a phase armature winding in the stator. The function of the armature winding is the same as that for a DSPM machine, whereas the DC field winding not only works as an electromagnet , but also as a tool for flux control and efficiency optimization.
  • The New Shop Class
    Aside from a few exotic types you’re not likely to use, DC motors create rotation by alternately powering two or more electromagnets placed near one or more permanent magnets. They power each electromagnet (called a winding) to pull it toward one pole of a permanent magnet and away from the opposite pole of the same or another permanent magnet.
  • Resonant magnetoelectric interaction in asymmetric bimorphous ferromagnetic-ferroelectric structure
    After assembling the structure, the PZT layers were polarized in the opposite directions by heating to 100°C and applying a dc voltage of 500 V between the electrodes. Then the structure was placed between poles of an electromagnet , in a constant tan gent bias field of H = 0–2 kOe.
  • Compact torque magnetometer
    A DC power supply provides the current for the conductor torsion fibre. The torque exerted on the sample by the applied magnetic field provided by the electromagnet is measured by means of an opposite torque produced by the current in the half … … torsion fibre in the holder located between the poles of the electromagnet.
  • http://dspace.mit.edu/bitstream/handle/1721.1/34987/76063975-MIT.pdf?sequence=2
    A DC -current electromagnet 109 establishes a constant bias magnetic flux in the pole pieces via the bias flux yoke 108. … set of diagonal air gaps, and subtracts from the bias flux in the opposite set of diagonal …