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  • How to Select a Low Noise Fan
    Horsepower (Not motor horsepower). The formula is given here to demonstrate the fact that the tip speed of the blades is by far the strongest indicator of the noise a fan will produce. To select a low noise fan, therefore, it is most effective to reduce the tip speed by lowering the RPM which can be done
  • Mighty motors
    Permanent-magnet synchronous motors eliminate gearboxes. Vice President and General Manager Industrial applications requiring high torque at low speeds typically use synchronous motors with reducers. Induction motors generate plenty of torque, but not at low speeds. However, new synchronous motor
  • Stepping Motors
    are available -- 1.8 to 80 , for example -- without logic manipulation. Stepping motors have inherent low velocity without gear reduction. A typical unit driven at 500 pps turns at 150 rpm. The rotor inertia is usually low. Multiple stepping motors driven from the same source maintain perfect
  • Fluid Motors
    , the shaft is driven through a differential-gear arrangement that permits low speed and high torque. Axial-piston motors have a reputation for high volumetric efficiency, combined with excellent operation at both high and low speeds. In hydraulic designs, axial-piston motors produce maximum torques
  • Lorentz forces shrink motor size
    The ironless stator of the e-Torq motor eliminates the iron saturation common to most other types and lets the motor run smoothly at extremely low speed, even when powered by a standard drive. In addition, the high peak torque capability eliminates gearboxes for many applications, such as where
  • How Hybrid Stepper Motor Advancements Improve Medical Pump Performance
    Designers of medical pumps often have to deal. with the challenge of implementing precise. yet low cost motion control. For most medical. pumps, there are three basic technology alternatives for. implementing such electronic motion control: permanent. magnet brush DC motors, brushless DC motors
  • Sensorless BLDC Control with Back-EMF Filtering
    the motor windings based on the filtered back-EMF signals. This control technique precludes the need for discrete, low-pass filtering hardware and off-chip comparators. BLDC motors are used in a variety of applications. The algorithm described in this application note targets BLDC motors
  • Choose wisely
    to keep manufacturing costs low and quality high. Stator windings are wound around a single pole tooth with each phase insulated for 480 V. None of the coils overlap to prevent coil-to-coil shorts. High-energy neodymium-iron-boron magnets produce optimum torque in a low-cogging electromechanical design

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