On the airflow of the fan

The key to choosing a fan is to have a large airflow, and secondly, it is best to have a light sound that does not affect the mood of the operator. The key factors are the caliber and power. In the permissible range of fan caliber the larger, not only the air volume and a wide range of roles. General host box is reserved for the installation of 8cm × 8cm axial fan, if not installed in the standard position is not this limitation. As for the power directly related to the fan speed, is a measure of the same caliber fan air volume is an important criterion, the general computer market 8cm × 8cm chassis fan power on the small side, are in the 12V, 0.14A or so, but easy to use, as long as the microcomputer plugged into the power supply can work. To get to the high-power fan need to do it yourself, the electronic market has a variety of power fans, just no computer-specific interface, to do their own welding, interface can buy some power supply one-point-two expansion line to take its four-core interface, the general yellow line said +12V, black line said 0V, red line said +5V, we take one of the yellow and black lines for the fan power supply, and the other electronic market often have a lot of second-hand cell phone axial flow Fan to buy, these are rare good things, most of them are removed from imported industrial equipment, many fans are Europe and the United States and Japan's original manufacturing, the use of noise is particularly low, the power is generally larger, 8CM × 8CM fan most of the 12V, 0.35A or so (fans are clearly labeled, take a look at it). Some of these aluminum alloy shell is even more superb, feel the size of the wind after powering up to know. More can find 9cm × 9cm and 12cm × 12cm large diameter fan.