Intelligent fan driving circuit

The utility model provides an intelligent fan drive circuit which comprises a signal input end, a first control assembly and a second control assembly, the signal input end is used for outputting signals, and the first control assembly is connected with the signal input end and used for outputting control signals according to the output signals. And the second control assembly is connected with the power supply, the fan and the output end of the first control assembly, is connected between the power supply and the fan, and is used for changing the power supply voltage of the fan according to the control signal so as to change the rotating speed of the fan and further change the wind noise of the fan. The rotating speed of the fan is controlled according to the actual output power of the power amplifier, and then the wind noise is controlled, so that the working stability of the power amplifier can be ensured, long-time wind noise can be avoided, and the user experience is improved. 本实用新型提供了一种智能风扇驱动电路，包括信号输入端、