Hardware current -limiting protection circuit of motor

The utility model provides a hardware current -limiting protection circuit of motor exports the electric current size of motor to through current -limiting detection circuitry detection switch pipe, and when the electric current is too big, this current -limiting detection circuitry's output signal will be through after processing circuit's the processing, in comparison circuit with predetermine base mark signal and carry out the comparison, and then by comparison circuit's output signal through the shutoff of protection drive circuit control switch pipe, cut off the power supply to the motor,this application realizes the current -limiting protection to the motor with hardware control, has avoided adopting the software control to realize the problem that the reliability is low that the motor current -limiting protection brought among the prior art. 本实用新型提供种电机的硬件限流保护电路，通过限流检测电路检测开关管输出至电机的电流大小，当电流过大时，该限流检测电路的输出信号将会通过信号处理电路的处理之后，在比较电路中与预设基准信号进行比较，进而由比较电路的输出信号通过保护驱动电路控制开关管关断，切断对于电机的供电；本申请以硬件控制实现对于电机的限流保护，避免了现有技术中