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  • Permanent Magnet Motors - PMDC
    has made prices steadily decline. Maximum-energy product (MEP) is used to indicate the relative strength of permanent magnets used in the permanent magnet motors (PMDC). Samarium-cobalt magnets typically run from 18 to 26 MGOe while neodymium ranges from 8 to 35 MGOe. In comparison, the most widely
  • Magnet Elements
    , a philosopher-scientist, noted that this invisible "field" could be mapped by placing a magnet underneath a flat piece of cloth or wood and sprinkling iron filings on top. The filings will align themselves with the magnetic field, "mapping" its shape. The result shows how the field continues unbroken
  • How Reed Switches are used with a Permanent Magnet (.pdf)
    enough, parallel motion can create three closures. and different sizes and strengths of magnets. and openings as demonstrated in Figure #25. Passing. the magnet by the Reed Switch farther away, one closure. First consider the case where the magnet and Reed and opening will occur. Switch
  • Permanent Magnet (PM) DC Gearmotors and Motors
    Permanent magnet DC (PMDC) motors provide a comparatively simple and reliable DC drive solution in applications requiring high efficiency, high starting torque and a linear speed/torque curve. Permanent Magnet (PM) DC Gearmotors and Motors | Bodine Electric Gearmotor Blog. Bodine Electric Gearmotor
  • Ampere*turn Versus mT And Gauss
    What is the relationship between AT (Ampere*turn) and Tesla or Gauss? What magnet strength will activate a 15 AT reed switch at 5 mm? There is not an answer that is both simple and accurate. Because the reed switch is made of ferrous material, it affects the magnetic field into which it is placed
  • Sensorless Field Oriented Control (FOC) for a Permanent Magnet Synchronous Motor Using a PLL Estimator and Field Weakening (.pdf)
    This application note describes a sensorless FOC algorithm for PMSM motors using a Phase-Locked Loop (PLL) position and speed estimator. Sensorless Field Oriented Control (FOC) for a Permanent Magnet Synchronous Motor (PMSM) Using a PLL Estimator and Field Weakening (FW) AN1292. Sensorless
  • A Comparison of the Measured Magnetic Field Strength Using Ampere-Turns (AT) and milliTesla (mT) (.pdf)
    , with a 120 mT 2. You plan to have the Reed Switch close 15 mm. AlNiCo 5 magnet measuring 4 mm by 19 mm in. away from the magnet you have chosen. length, mounted at its axis origin, the magnetic field. strength was measured (in mT) at regular mm in-. 3. You are capable of measuring your magnetic field
  • Magnets and their Specifications (.pdf)
    Magnets are available in multiple specifications on the market. Almost all dimensions and geometries can be. realised. To activate the reed switch a magnet (magnet field) is needed. The different magnet materials have either more positive or negative specifications, depending on the dimension

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