Reference
This article provides an in-depth look at the fan module, covering its components like stator and rotor, the role of control circuits, and how digital and analog signals affect fan speed and operation.
Principle
The fan module is mainly composed of stator and rotor. The stator mainly includes control circuit, bearing and coil. The rotor is mainly composed of fan blade, magnet and shaft. Simply speaking, the working principle of the fan is that the current passes through the control circuit, generates a rotating magnetic field at the stator coil and electromagnet, and pushes the magnet on the rotor to rotate in a specific direction, so as to drive the whole fan blade to rotate at a high speed, which will push the air to pass through the fan blade quickly to reach a specific air volume and air pressure.
Other Supplementary Information
- Power up the fan module, then it starts rotating. Or you can use a rotation module to control the voltage for the fan so as to make the blade go faster or slower, by which the fan can operate at variable speeds.
- When you use digital signal to control the fan module, input high level to start the fan, and input low to stop it.
- When you use analog signal to control the fan module, the larger the input signal, the higher the speed, and vice versa.
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