Will the positive and negative poles of the DC cooling fan burn if connected reversely?
The DC cooling fan has two positive and negative power wires. When the cooling fan is installed, the positive and negative wires are connected reversely. Will the cooling fan burn out? Probably, this is mainly related to the IC design of the cooling fan factory. The driver IC of the general two-wire winding method has an internal protection design. The positive and negative power lines are connected reversely, showing a short circuit. At this time, the cooling fan's The current will be much higher than normal. If the motor current is large, the temperature rise of the motor itself will be high. When the temperature reaches a certain level, the driver IC will be damaged due to overheating, and the cooling fan will be broken at this time. There is a part of the single-winding driver IC. Polarity protection, if there is no polarity protection on the motor stator PCB board, it may burn the IC instantly when it is connected. In order to prevent the cooling fan from burning due to reversed polarity connection, it is best to add a diode to the PCB of the cooling fan to design polarity protection. In this way, the power-on cooling fan is connected reversely, and the current is zero, showing no power. You will never be burned. Welcome to the cooling class and news center of the cooling fan manufacturer again. The copyright belongs to the cooling fan manufacturer and represents only personal opinions. Please do not reprint the whole article. Any violation will be held for legal responsibility. If you need to understand the cooling fan For more product introduction of manufacturers, please click Product Center