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  • Improving High-Speed Performance of Hybrid Stepper Motors
    Bipolar drives supply steppermotor windings with current waveforms that look like square waves when fully stepping or sine waves when micro-stepping at a high resolution. The waveforms shown in the oscilloscope displays illustrate the drive current in a half-stepping mode, which is two discrete
  • Stepper Motor Control with dsPIC (R) DSCs
    This application note describes how to drive a stepper. motor with a dsPIC33F motor control family DSC. The eight PWM channels (six pins from the PWM1. module and two pins from the PWM2 module) are used. to control a stepper motor in all possible ways, whether. it is bipolar or unipolar, using full
  • MICRO:Defect/Yield Analysis
    Venuka K. Jayatilaka and Phillip B. Espinasse, PolarFab Power management applications are relying increasingly on highly integrated bipolar-CMOS-DMOS (BCD) processes, combining bipolar and logic components with large metal-oxide-semiconductor (MOS) drivers on the same chip. As processes become more
  • Medical Device Link .
    A hollow-shaft stepper allows access for electrical and optical cables through the central axis of the motor. The 2.25-in.-diam motor is bidirectional and based on a 1.8 step with noncumulative position accuracy of +-3%. The peak torque rating is 50 oz-in. Other features include permanently
  • Stepper Motor Control Using the PIC16F684
    between full steps and to improve the step resolution of the motor. Microstepping also This application note describes how to drive a bipolar improves the efficiency of the system, because the stepping motor with the PIC16F684. The Enhanced current in the windings of the motor is manipulated

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