Fan Speed Module
 

Working Principles

The working principles of a Fan Speed Module vary depending on the specific technology employed. However, some common methods include:

• Voltage Regulation:
  • The FSM adjusts the voltage supplied to the fan, thereby controlling its speed.
  • This method is simple but may not provide the finest level of control or efficiency.
• Pulse-Width Modulation (PWM):
  • PWM involves rapidly switching the power supply to the fan on and off, with the duration of the "on" period (known as the duty cycle) determining the average power delivered to the fan.
  • This method allows for precise and efficient control of fan speed, often with minimal noise and power consumption.
• Intelligent Algorithms:
  • Some advanced FSMs employ intelligent algorithms that take into account multiple factors, such as temperature, load, and user preferences, to optimize fan speed in real-time.
  • These algorithms can be highly effective in achieving optimal performance and efficiency across a wide range of operating conditions.