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  • BLDC Ducted-Fan Motor for Unmanned Vehicles
    A high-efficiency brushless ring motor developed by ThinGap Corporation of Ventura, California based on its patented electromotive coil technology promises to reduce energy consumption, allowing such small Unmanned Vehicles (UV), light enough to be carried by a man into reconnaissance or combat
  • Electrical Considerations of Fan Cooling
    . The standard fan supplied with the amplifiers is a 12V brushless DC motor fan. Like all switching circuits the brushless motor commutation generates electrical noise. If care is not taken in how the fan is connected to the amplifier circuit some of that electrical noise may appear at the output
  • Electronically-Controlled Hydrostatic Fan Drive Systems (.pdf)
    . Electric fan motors may be practical for low-power applica-. and the rest must be extracted from the engine block by the. tions, but typically they are not a practical solution for larger. cooling system. vehicles with higher fan power requirements. In these larger. For heavy-duty vehicles
  • Speed Error in PWM Fan Control Systems
    versus PWM duty cycle. Author: Microchip Technology Inc. error is a function of the mass and diameter of the fan. INTRODUCTION. hub, the torque characteristics of the fan motor and the. losses in the center bearings. Air temperature and. Brushless DC fan (BDC) speed can be varied using. humidity also
  • Linear Voltage Fan Speed Control Using Microchip's TC64X Family
    on or completely off. This efficient control methodology affords a very wide speed control range (typically 10% to 100% of full speed) because the fan motor is exposed to its full-rated voltage during the active portion of the PWM cycle. PWM control works with standard, two-wire Brushless DC (BDC) fans
  • Fan Variants: What Type Of Drive, What Type Of Material? (.pdf)
    ' will result in an efficient fan with a long service life. Drive options. All of the various types of fans discussed so far can be equipped with different drive motors. The intended place. of installation is of crucial importance for making the right choice of motor. Certain motor designs
  • Intelligent Fan Control
    This application note describes the creation of an intelligent 4-wire fan. Microchip. Chinese Japanese English. Products. PIC(R) Microcontrollers. 8-bit PIC(R) MCUs. 16-bit PIC(R) MCUs & dsPIC(R) DSCs. 32-bit PIC(R) MCUs. Amplifiers & Linear. Operational Amplifiers. Instrumentation Amplifiers
  • 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

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