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The difference between AC cooling fan and DC cooling fan. The former is powered by AC, and the power supply voltage will alternate between positive and negative, unlike DC fans where the power supply voltage is fixed and must rely on circuit control to make the two sets of coils work alternately to generate different magnetic fields. Due to the fixed power frequency of AC fans, the speed of magnetic pole changes generated by silicon steel sheets is determined by the power frequency. The higher the frequency, the faster the magnetic field switching speed, and theoretically, the faster the speed will be, just like the principle of DC fans with more poles and faster speed. However, the frequency should not be too fast as it will cause difficulty in activation.

When selecting a DC radiator fan, the following factors should be considered:

1. Speed of DC radiator fan:

The speed and power of the DC cooling fan are the same. The higher the rotational speed, the stronger the wind force, and the better the heat dissipation function. Little did they know, the relative high-speed rotation would cause high vibrations, and it would also be accompanied by noise. The higher the speed ratio, the greater the harm to the service life of the electric fan.

2. Raw materials for DC radiator fan:

Currently, aluminum and plastic are two common materials in the market. The raw material for aluminum electric fans is usually AC fans. The thermal performance of communication fans is low and the exhaust volume is small. The raw material for DC radiator fans is usually plastic.

3. Output power of DC radiator fan:

The higher the power of the light bulb, the brighter the sound system. The higher the sound system power, the stronger the natural wind speed of the DC cooling fan, and the higher the wind speed, the higher the heat pipe's heat dissipation effect. Therefore, comprehensive comparison and selection should be made based on the raw materials and principles of DC cooling fans.

4. Performance of DC radiator fan:

The DC radiator fan must be able to provide sufficient exhaust pipe capacity (i.e. speed ratio). At high temperatures, when the temperature of the hot air is low or the total flow rate of the hot air is low, the hot air in the water-cooled equipment works in the opposite direction.

5. Choose a good DC radiator fan:

Customers usually overlook this when selecting. After being used for a period of time, many fake and well-known brand fans will cause significant noise due to severe damage to the rolling bearings, which not only endangers the service life of the fan, but also makes you uneasy when using it. Therefore, it is recommended that you choose high-quality well-known brand fan products. Juchengxing Warm Reminder: The above are some aspects to consider when choosing a DC cooling fan. After understanding the above points, you will know how to choose a DC cooling fan when purchasing.

As the name suggests, a thermal module is a module unit used for heat dissipation purposes in systems/devices/equipment, etc. It now specifically refers to the heat dissipation device of laptops, and later expanded to refer to the heat dissipation device (Cooler) of desktop computers and projectors that use heat pipes.

Heat dissipation mechanism: Due to the internal space characteristics of laptops, the concept of RHE (Remote Heat Exchanger) heat exchange must be adopted to solve the problem of system waste heat.