Brush less DC fan
  A BLDC fan, or Brushless DC fan, is a type of electric fan that uses a brushless DC motor to rotate the fan blades. Unlike traditional fans that use an AC motor, BLDC fans have a permanent magnet motor with a rotor that is surrounded by fixed stator windings.

Some of the advantages of BLDC fans over traditional fans include:

1. Energy Efficiency : BLDC fans are more energy-efficient compared to traditional fans because they consume less power to operate. 
2. Longer Lifespan : BLDC fans are designed to last longer than traditional fans
3. Quieter Operation : BLDC fans produce less noise compared to traditional
4. Improved Control : BLDC fans are easier to control because they can be controlled using electronic speed controllers that can vary the speed of the fan. The speed of the fan can be adjusted to suit the specific cooling needs.