CodePudding user response:
Consider the fit of motor and the drive, the key is to look at the work of the power supply voltage and current, such as you prepare to use 7.2 V battery as a power source, and select the drive is 10 V and above the minimum operating voltage, it cannot be used directly, of course, the rated voltage of motor itself can be smaller than the driver output voltage... Commonly used PWM speed regulation, duty ratio is related to the size of the drive of the output voltage effectively, in addition, L298 chips are too old for that now, the output will also have to add the fly-wheel diode, can consider TB67H450 within 2 a and TB67 H451, duplex can consider TB6612, these are the output power MOS tube, can no longer add stream tube