A lot of products, requires a cooling fan is more quiet, if there is no sound better, so, how to choose a cooling fan manufacturer to do more quiet?
1. Low voltage can be designed, such as 5 v, 12 v, because the same size of the cooling fan, low voltage design, speed can be lower, running the sound when smaller
2. Design of the larger size, speed design, sound quieter
3. Double ball bearing is proposed, which can maintain the cooling fan for long quiet work, not easy to appear different sounds.