12V DC Fan Speed Controller Circuit - Simple Electronic Project
Introduction
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Diagram of DC Fan Dimmer Circuit
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Components Needed for this Project:
You can get the components from any of the sites below:
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Related Basic Electronic Mini Project Circuit Diagram:
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Working Principle
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Frequently asked questions
Speed Controller: Pulse Width Modulation (PWM) If a 12V motor is given a PWM signal that is high 12V for 2-thirds of each period and low 0V for the remainder, the motor will effectively operate at two-thirds of the full voltage, or 8V.
The DC fan speed can either be regulated by adjusting the supply voltage (DC Line, lower voltage = lower speed) or controlling the fan via a PWM signal DC line.
The speed can be controlled 2-ways - controlling the voltage to the adjust lead or controlling the resistance between the adjust lead and the return.
A DC Power motor controller is an electronic device that manages the performance of a direct current DC motor. You can use it to start and stop the motor and control its speed, torque, and rotational direction.
Fan controller ICs are devices that integrate Pulse-Width Modulation (PWM) controllers with temperature sensor Control, ramp rate control, spin-up algorithms, and look-up tables for setting the fan speed control.
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