brushless drive five basic requirements for driving power supply 1)Phase number, modes of drive power supply voltage, current and meet the needs of the stepper motor; 2)To meet the start frequency of brushless drive and running frequency requirements; 3)Can maximize the inhibition of the volatility of stepper motor. 4)Brushless drive reliable operation, strong anti-interference ability; 5)Low cost, high efficiency, easy to install and maintain. http://www。 tcmotor。 Com foshan electrical and mechanical equipment co. , LTD. , brushless motor controller, brushless dc motor controller, dc servo motor controller, planetary reducer, brushless drive, electrical and mechanical, foshan electrical and mechanical equipment co. , LTD