Single-phase AC motor has revolution rate sensor with output connected to electronics for disconnecting start-up capacitor connected in parallel with operating capacitor during start-up

摘要

The motor has a main phase winding (12), an auxiliary phase winding (14) in series with an operating capacitor and a startup capacitor (18) that is connected in parallel with the operating capacitor during start-up and is disconnected after start-up. A motor revolution rate sensor's (22) output is connected to switching electronics (20,24,30,32) to disconnect the start-up capacitor.