DC motor – brushed motor, who has studied physics in middle school, knows that in order to study the force of the current conductor in the magnetic field, we practiced the left hand into a broken palm, which is also the principle of DC motor. All motors are composed of a stator and a rotor. In a DC motor, in order to make the rotor turn, the direction of the current needs to be changed continuously, otherwise the rotor can only turn half a turn, which is like a bicycle pedal. So DC motors need commutators. DC motors in a broad sense include brushed motors and brushless motors. Brushed motor is also known as DC motor or carbon brush motor. DC motor is often referred to as brushed DC motor. It adopts mechanical commutation, the external magnetic pole does not move and the internal coil (armature) moves, and the commutator and rotor coil rotate together. , the brushes and the magnets do not move, so the commutator and the brushes are rubbed and rubbed to complete the switching of the current direction.