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Home > News > What are the advantages and disadvantages of the DC fan and the AC fan?

What are the advantages and disadvantages of the DC fan and the AC fan?

2018-01-31

What are the advantages and disadvantages of the Dc Fan and the Ac Fan?

The fan is mainly the difference of motor.

The difference between the AC Fan and the DC Fan. The former power supply is AC, and the supply voltage will be positive or negative. Unlike DC, the power supply voltage of the fan is fixed. It must rely on circuit control to make two sets of coils work alternately to produce different magnetic fields. AC fan for power frequency is fixed, the pole changing speed so the silicon steel sheet, determined by the power frequency, the higher frequency magnetic field switching speed faster, faster speed, theory, principle of DC fan like pole number more speed faster. However, the frequency can not be too fast, too fast will cause the difficulty of activation.
AC motor has become the most commonly used motor because of the great development of AC power system.
Compared with DC motor, AC motor has no commutator (see commutation of DC motor), so it is simple in structure, easy to manufacture and firm, and easy to make motor with high speed, high voltage, large current and large capacity. The coverage of AC motor power greatly, from a few watts to several 101000 watts, even millions of kilowatts.
DC motor has complex manufacturing process and high cost. It can't use DC motor in the place of AC motor. Sometimes the DC motor is more convenient in the absence of electricity, so the use of fans is different and different. For example, the Radiator Fan inside the battery charger, the computer CPU, the computer chassis heat dissipation fan are 12 volts and 1 ampere specifications of the DC drive fan. AC fan fan is AC driven AC fan cases such as suction heating boiler draft fan 220 volt 0.25 amps 40 watts of power, but also rural Kang above the chimney.
But the AC fan is not better than the direct current fan. About fan maintenance: first, open the equipment shell, then open the fan, the fan closed equipment supply, 2CM distance with air gun, blowing fan; then wipe with industrial alcohol dirt fan above, then tilt the body to adjust the clearance position, after a good tune with the wind blowing dust gun device. From the front of the equipment to the equipment, it needs to be cleaned and rotated again and again until clean.

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