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  • Controlling Brushed DC Motors Using PWM
    Many applications using miniature brushed DC motors require motors to operate at more than one load point or through specific load cycles. Running a motor at usable load points requires a variable, controllable power source. This can be done by a continuous linear regulation power supply or pulse
  • Understand the Effect of PWM When Controlling a Brushless DC Motor
    Designers of motion systems often face challenges when selecting or developing electronics using pulse width modulation (PWM) to drive brushless DC motors. To avoid unexpected performance issues, it's important to understand some of the basic concepts.
  • Understanding the Effect of PWM when Controlling a Brushless DC Motor
    Designers of motion systems often face challenges when selecting or developing electronics using PWM (Pulse Width Modulation) to drive brushless DC motors. It is useful to keep in mind some basic physical phenomena to avoid unexpected performance issues. This document provides general guidelines
  • Controlling Brushed DC Motors Using PWM - Optimal Frequency, Current Ripple, and Life Considerations
    Many applications utilizing Portescap's brushed DC miniature motors demand driving the motors at more than one load point or through specific load cycles. Running the motor at usable load points requires a variable, controllable power source, which can be achieved through continuous linear
  • Driving DC Brushed Motors
    To control a DC motor, a variable, and controlled power supply is needed. There are three types of methods that can be used: Voltage-controlled linear supply. Current linear supply. PWM (Pulse Width Modulation)
  • Controlling Brushed DC Motors with Pulsed-width Modulation (PWM)
    The enduring popularity of coreless brushed DC motors comes from a combination of their simplicity of design, fast transient responses, negligible iron losses and ease of control. With speed proportional to applied voltage, the motor can be simply driven using a continuous linear regulation power
  • Using AC PWM Drives on Non-Standard Voltages and Frequencies
    Often, there may arise the need to apply an AC PWM drive1 to input voltages such as 200, 208, 380, 415 and possibly other levels, as well as input frequencies such as 50 Hz. The AC PWM regulator utilizes a switching power supply for control power that is sourced from a DC bus. This gives the unit
  • Low-Cost DC Motor Speed Control with CMOS ICs
    Two low-cost CMOS ICs manage a 12 VDC, current-limited speed control circuit for DC brush motors. The circuit design (see Figure 1) uses PWM (pulse width modulation) to chop the effective input voltage to the motor. Use of CMOS devices gives the benefits of low power, minimal heat and improved

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