The starting winding come capacitor circuit is there for starting the motor. When the motor reaches 80% rated speed, the centrifugal switch cuts the starting circuit out and leaves the run winding only.
Now, in a cap-start cap-run motor, the centrifugal switch cuts out only the start capacitor and leaves the run capacitor in series with the starting winding. For what purpose is this?
Also, If torque depends on the current and the starting winding has a higher resistance, wouldn't it make more sense to cut out the starting winding completely to achieve a higher torque?
I am a bit confused as to how this cap-start cap-run arrangement produces a higher torque as opposed to a normal cap start motor. Please assist.