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If the cooling fan does not work, there may be a problem with the matching!

by:TOCH     2021-03-26
After turning on the power, if you find that the cooling fan does not work, the first thing you worry about is whether the cooling fan is faulty. In fact, it is not necessarily. The following situations are caused by unmatched 1. Use a constant current source as the power supply, if constant current The output current of the power source is inconsistent with the current of the cooling fan, the cooling fan will not rotate, it may rotate very abnormally. 2. Use the power supply after the voltage regulator, if the voltage is lower than the starting voltage of the cooling fan, it will also cause the fan to rotate Can't get up
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