What's the difference of AC fan and DC fan
DC fan converts electric energy into machinery through DC voltage and electromagnetic induction, so as to drive the wind blade to rotate. Relying on the continuous switching of coil and IC, the induction magnetic ring drives the wind blade to rotate.
The AC fan is driven by AC power supply, and the voltage will change between positive and negative. It does not rely on circuit control and generates a magnetic field. The power frequency is fixed, and the change speed of magnetic pole generated by silicon steel sheet is determined by the power frequency. The higher the frequency, the faster the magnetic field switching speed, and the faster the rotating speed in theory.
Below table shows the difference between the AC fan and DC fan :
| Item | AC Fans | DC fans |
| Air Flow | Rotate 50 times a second to provide a stable air volume | variable and unstable air volume |
| applications | It is often used in equipment requiring stable and stable air volume, such as household appliances, air conditioning systems and industrial equipment | It is widely used in computers, communication products, photoelectric products, consumer electronics, automotive electronic equipment, exchangers and medical equipment,etc |
| industrial equipment is most widely used in distribution boards, such as tool machines, industrial electric heating equipment, automatic control systems, etc. | ||
| Advantages | Stable and continuous air volume | Low electromagnetic interference |
| Hot air can be discharged and colder air can be inhaled | low power consumption | |
| Disadvantages | More energy consumption than DC fan | can't provide direct and continuous air volume |
| A standard AC fan runs at high speed and uses no more than 100 watts | Transformers may be required in some situations | |
| AC fans use alternating current, and the current will change direction; | DC fans must use a transformer (rectifier) to convert AC into DC in order to make the fan |
AC fans and DC fans can be seen everywhere in our daily life. For different product applications, we should choose their own suitable fans as tools for blowing, heat dissipation and other functions.
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