What is the principle of DC fans?

What is a DC fan? What is the principle of DC fans? How is the circuit of the DC fan designed? What is the applicable scope of DC fans and how long is the service life of DC fans? The following will solve these doubts for you.

Here is the content list:

1.What is the principle of  DC fans?

2.How is the circuit of the  DC fan designed?

3. What is the applicable scope of  DC fans?

4. How long is the service life of  DC fans?

What is the principle of  DC fans?

The designed pulse generator based on the Hall element has a simple structure and good performance. There is a relatively harsh electromagnetic environment in the locomotive electrical system, so the  DC fan product itself is required to have a strong anti-interference ability.

The DC fan is driven by a brushless motor and has no electromagnetic interference. It is widely used in electronic and electrician applications where forced heat dissipation is required.

Such as the working principle of Hall switch, AX277 Hall switches circuit AX277 Hall switch integrated circuit is a monolithic semiconductor integrated circuit. The circuit is composed of seven parts including reverse voltage protector, precision voltage regulator, Hall voltage generator, differential amplifier, Schmitt trigger, temperature compensator, and complementary open collector output device. It has a working voltage range of Wide, high magnetic sensitivity, strong load, and reverse protection capabilities. Because this circuit has a load capacity of up to 300 mA and is a complementary output, it is the most ideal device for DC fans.

How is the circuit of the  DC fan designed?

Micro DC motors are widely used in household appliances, especially in computers. DC motors are widely used for exhaust and cooling. This new type of DC fan adopts a structure, which overcomes the easy wear and tear of traditional commutator (brush) motors. Disadvantages such as large noise and short life.

What is the applicable scope of  DC fans?

The DC fan is usually used on equipment with relatively high control requirements and high speed, such as model airplanes, precision instruments, etc., which have strict control of motor speed and high speed.

How long is the service life of  DC fans?

Generally, the service life of  DC fans is in the order of tens of thousands of hours, but the service life of brushless motors is also very different due to different bearings. For example, the life of oil-impregnated bearings is generally 20,000 hours, and double ball bearings are generally 50,000 hours.

The above is a complete introduction to the structure and classification of DC fans. It is the responsibility of each manufacturer to produce hot DC fans that meet the standards, to ensure the healthy development of the  DC fans market. Dongguan Xingdong Electronics Co., Ltd. conducts many tests on DC fans before they leave the factory, and the quality qualification rate is guaranteed. If you are in the  DC fans business, you can consider our cost-effective products.