... help motor provide higher efficiency Brushless DC motors controller (BLDC), or electronically commutated motors controller (ECMs) have become more relevant in ... -10V and PWM signal, PFC.Function: Stepless speed control, CW or CCW rotation; start and stop; speed feedback, Fault alarm, etcCan ... range, No noise, hall-free, power,etc. power,etc. 115V single phase BLDC fan motor driver or controller