An AC motor is an alternating current motor, and a DC motor is mainly a direct current motor.

AC is alternating current: "AC" for short. Generally refers to the voltage or current whose magnitude and direction change periodically with time. Its most basic form is sinusoidal current. The standard frequency of AC power supply in my country is 50 Hz. Alternating current can take many forms over time. Different forms of alternating current have different applications and effects.

DC is direct current: an electric current whose magnitude and direction do not change with time. Also called constant current. The circuit passed through is called a DC circuit, which is a closed conductive loop composed of a DC power source and a resistor. In this circuit, a constant electric field is formed. Outside the power supply, the positive charge flows from the high potential to the low potential through the resistor. At high potential, this cycle forms a closed current line.