Must add 1 brushless dc motor drive to work, drive signal must be a pulse signal, no pulse, stationary brushless dc motor, if add the appropriate pulse signal, will be at a certain Angle,Called the step Angle)The rotation. Rotation speed and pulse frequency is proportional to the. 2 tenglong version of brushless dc brushless dc motor Angle of 7. 5 degrees, a circle of 360 degrees, need 48 pulse. 3 brushless dc motor has the superior characteristic of instantaneous start and stop rapidly. 4, changing the order of the pulse can easily change the direction of rotation. as a result, the printer, plotter, robots, and so on equipment is powered by BLDC motor core.