The working principle of the cooling fan is based on energy conversion, that is, electric energy → electromagnetic energy → mechanical energy → kinetic energy. The circuit principle is generally divided into various forms. The performance of the fan will be different with different circuits.
The fans that cool the computer case are called cooling fans. It can be inside or outside the enclosure. It will force warmer air into the case and force cooler air into the case, cooling other components as they pass over the heat sink. Both centrifugal fans and axial fans are frequently used in computers. A 3-pin or 4-pin fan electronics connector will be used to power and regulate the cooling fan, which comes in several basic sizes. In recent years, in addition to improving basic functions such as noise and power consumption, cooling fans with various designs and lighting effects have been developed.
