With the continuous improvement of people's living and economic standards in China,DC FanThe application in our life is more and more widely, which also prompted manyDC FanThe main reason for the supplier, so among so many suppliers, how do we choose a good DC fan?

1. Selection of bearings: Basically, the bearings of DC fans are divided into two types, one is the form of balls, collectively referred to as ball bearings. There is also a kind of oil, collectively referred to as oil bearing. The difference between them is that the ball bearing has long service life and low noise, but the price is very expensive. The service life of oil-containing bearings is 1/3 shorter than that of ball bearings, and some noise (more than one year) may occur after a period of use, but the price is cheap.

2. Choose from the appearance: from the outer surface, the overall color should be relatively thick and pure (especially black, which is not important for fans with color). There are no burrs on the edges of the frame leaves. Look at the thickness of the fan leaves (it is very important because they are too thin and easy to break). There is not much deformation when pinching the outer frame by hand.

3, hear the sound of the wind (some high speed may have electromagnetic sound), if there are other sounds that its quality is not very good. If the speed of the DC fan is not very high, like a fan speed of seven centimeters does not exceed 3500RPM, but the wind is loud enough to indicate that the quality of the fan is too poor.

4. Look at the parameters on the outer package: The following two parameters are provided for your reference voltage: 5V 12V 24V 48V current: the operating current is less than 250mA (more than 250mA indicates that this product is unqualified).

For more fan technical guidance, please pay attention to Jiangshan to Electronics, 14 years of industry technology precipitation, and make products with your heart.