Why is there a carbon brush on an electric drill and an ordinary motor? What's the use of it?
Therefore, the electric drill type small power tools generally use DC motor, small size, large torque, brush with reversing, rectifying role. Therefore, AC and DC can be used.
Electric drill motor is a DC motor, carbon brush is an indispensable component of the DC motor, and the ordinary motor is an AC motor, carbon brush plays the stator winding and rotor winding conduction,
Because the torque characteristics of DC motor is hard (as the saying goes "strong"), single-phase AC motor torque characteristics of soft.
