electronic motor drill variable speed fan controller switch 

Electronic Automatic Speed Controller,Engine Speed Governor,Generator Speed Control Unit,Dc Speed Electric Motor Controller How to control the speed of the motor, the solution: Now the frequency conversion method is widely used, through the frequency converter to change the motor running frequency and change the motor speed. The frequency of the frequency converter can be set at will, different output frequency motor will have different speed. In addition, DC motor, reduce voltage, AC motor, reduce AC frequency., Stepper motor, modify the stepper signal can achieve the effect of controlling motor speed. Product Description Voltage 100-120V Frequency 50/60Hz Max Current 15A…