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Dc Motors : Brushless Dc Motor

A direct current (DC) motor uses DC power to create a magnetic field and convert electrical energy into mechanical energy. DC motors are commonly either brushed or brushless, using the process of commutation to switch the direction of the electrical current, thereby creating an alternating current from the DC power source. In a brushless DC motor, the brush assembly is replaced by an electrical switch that is triggered by the location of the motor rotor. Due to the absence of the brushes, brushless motors are typically about 10% more efficient than brushed motors.