I am looking for a simple circuit for to speed control a 230V AC motor.
Motor power is about 10W
I saw those really cheap 2000W controller on Aliexpress etc. for a few $, but question is if they can handle very low loads?
What controls the speed anyway? Frequency or voltage? Currently there are 2 switch positions, full power to the rectifier, then to the motor, and half power with one extra diode inbetween.
Anybody has any information, or a useful link?