I am looking for a device that would allow me to control how fast a AC motor spins. I am using a 110v AC motor that came off a air compressor. Can anyone help?
Buy a light dimmer cost about U$5 piece. It is good to control up to 600 watts. It can control AC motor.
You need an electronic motor speed control. It varies the voltage and the frequency to change the speed. The ratio of voltage to frequency is maintained constant. Do a web search.
A light dimmer might work with a shaded pole motor driving a fan.
