Does the single-phase motor must be equipped with a start capacitor and ac capacitor?

Single-phase motor generally refers to single-phase asynchronous motor powered by single-phase AC power supply (AC220V). The choice of capacitor for single-phase motor is related to the design of motor data. Some single-phase motors with small power can be operated with a single capacitor. Single-phase motors with a slightly larger power are typically equipped with two capacitors: one to start and one to run. But some 2200W motors use only one 300uf starting capacitor, and 2200W motor has a 300uf starting capacitor and a 40 / 50uf operation capacitor.

A single-phase motor can be equipped with a capacitor: a running capacitor or a starter capacitor. Two capacitors can also be supplied: a startup capacitor and a running capacitor.