How to adjust the speed of a brushless DC cooling fan

How does the brushless DC cooling fan adjust the speed? Here, the technical staff of our company's Wenling cooling fan Tongchi automotive air conditioner will answer for you: First. The speed of the cooling fan can be changed by the voltage, because when the voltage of the cooling fan changes, the power of the cooling fan will be changed, which will affect the speed of the cooling fan, but the voltage of the cooling fan cannot be changed at will, and can only be adjusted downwards. If the voltage is too high, it will easily cause the circuit components of the cooling fan to be burned. second. Ordinary cooling fans cannot adjust the speed according to the ambient temperature, that is, they cannot automatically change their own voltage. Because the motor is fixed, as long as the voltage does not change, the power of the cooling fan will be as high as the speed of the cooling fan. third. If you want to change the speed of the cooling fan, you can connect a temperature control resistor in series. When the temperature changes, the temperature control resistance will follow the change, so that the resistance of the cooling fan motor connected in series will change to change the speed. The above is the speed adjustment method of the brushless DC cooling fan. For more information about the cooling fan, please follow our official website.