In this permanent condenser electric motor the auxiliary winding and the condenser are permanently connected, the capacitor being electrostatic. The effect of this capacitor is to act in the creation of flow conditions considered very similar to those found in multiphase motors, thereby increasing the maximum torque, its efficiency and the power factor, thus having the ability to reduce substantially The noise.
From a constructive point of view, they are considerably smaller and maintenance-free since they do not need to use contacts and moving parts, as in other types of existing engines for commercialization. However, its starting torque is considered to be lower than the split phase motor, on average 50% to 100% of the rated torque, which can certainly be decisive if it is necessary to limit its application to equipment that does not normally require high Starting torque.
As an example, blowers, various office machines, fans, exhaust fans, centrifugal pumps, grinders, small saws, drills, air conditioners and sprayers, among other equipment can be mentioned. They are normally designed for power ratings ranging from 1/50 to 1.5 hp.