What is a key feature of a permanent split capacitor motor during operation?

A permanent split capacitor motor (PSC motor) is characterized by its design that includes a capacitor in series with the start winding. During operation, the capacitor continuously provides power, which helps to create a phase shift in the current. This phase shift is essential for generating the necessary starting torque and improving the motor's efficiency during standard operation.

This continuous power supply to the capacitor means that it remains engaged during both the starting phase and the running phase of the motor, allowing for consistent performance across various operating conditions. The capacitor enables the motor to start and run more smoothly, as it enhances the motor's overall efficiency by improving the power factor.

In contrast, a PSC motor does not operate at high frequencies, nor does it have a split capacitor design in the sense of having multiple capacitors that switch in and out; it uses a single capacitor throughout its operation. Additionally, PSC motors do not use brushes, as they are typically designed as induction motors; brushes are more commonly associated with brushed DC motors and can lead to maintenance challenges and efficiency losses.