Electric motor
Electric motor (Electric motor, Electric motor) is a generic term for power equipment and prime mover that convert electric energy into mechanical energy. Also called motor, electric motor. In general, many of them output rotary motion by utilizing force due to magnetic field (magnetic field) and current interaction (Lorentz force), but linear motors that obtain linear motion and ultrasonic waves using ultrasonic vibration without using a magnetic field Motors and the like are also in practical use. Electrostatic motors utilizing electrostatic force have also been known for a long time. In the meantime, the term "motor" means "power", not particularly limited to electric motors. Therefore, devices that play some role of power are often categorized as motors (motorcycles, motor boats, motor gliders, etc.). In the following description, we will focus on general electric motors that generate rotational force by electromagnetic force, other linear motors and ultrasonic motors will briefly be described at the end. ...