What characterizes a capacitor start motor?

A capacitor start motor incorporates a capacitor in its circuit to enhance starting torque, making it particularly effective for applications requiring a strong initial push. The capacitor is temporarily connected in series with the starting winding, which creates a phase shift in the current. This phase shift increases the starting torque significantly compared to motors without this mechanism, allowing the motor to start more readily under load.

While some motors might not include a starting mechanism, the distinctive feature of a capacitor start motor is its reliance on the capacitor to facilitate a robust start. Additionally, it doesn’t require an external power source beyond the standard electrical supply used in household or industrial settings. Moreover, it's important to note that capacitor start motors are not typically designed for low torque applications; they are favored for their ability to deliver high starting torque, making them suitable for various applications, including pumps and compressors.