Introduction - If you have any usage issues, please Google them yourself
And motor control of the PWM mode of the discussion seems more for the second category. PWM control as an important model for the remote control a higher degree. And remote control toys in general do not speed, H Bridge, only to change to. Industrial control has been due to very low speed after deceleration is no longer an urgent need to speed, the direct use of on-off control has been able to meet most requirements.