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  2. Piezoelectric motor - Wikipedia

    en.wikipedia.org/wiki/Piezoelectric_motor

    Insides of a slip-stick piezoelectric motor. Two piezoelectric crystals are visible that provide the mechanical torque. [1]A piezoelectric motor or piezo motor is a type of electric motor based on the change in shape of a piezoelectric material when an electric field is applied, as a consequence of the converse piezoelectric effect.

  3. Internal fan-cooled electric motor - Wikipedia

    en.wikipedia.org/wiki/Internal_fan-cooled...

    An internal fan-cooled electric motor (colloquially, fan-cooled motor) is a self cooling electric motor.Fan cooled motors feature an axial fan attached to the rotor of the motor (usually on the opposite end as the output shaft) that spins with the motor, providing increased airflow to the motor's internal and external parts which aids in cooling.

  4. Fan (machine) - Wikipedia

    en.wikipedia.org/wiki/Fan_(machine)

    A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

  5. Rotating magnetic field - Wikipedia

    en.wikipedia.org/wiki/Rotating_magnetic_field

    The rotating magnetic field is the key principle in the operation of induction machines.The induction motor consists of a stator and rotor.In the stator a group of fixed windings are so arranged that a two phase current, for example, produces a magnetic field which rotates at an angular velocity determined by the frequency of the alternating current.

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  7. Centrifugal fan - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_fan

    A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan (because it looks like a hamster wheel).

  8. Cam (mechanism) - Wikipedia

    en.wikipedia.org/wiki/Cam_(mechanism)

    The cam can be seen as a device that converts rotational motion to reciprocating (or sometimes oscillating) motion. [clarification needed] [3] A common example is the camshaft of an automobile, which takes the rotary motion of the engine and converts it into the reciprocating motion necessary to operate the intake and exhaust valves of the cylinders.

  9. Rotary woofer - Wikipedia

    en.wikipedia.org/wiki/Rotary_woofer

    A rotary woofer is designed to produce only frequencies lower than 20 Hz; distortion increases as the input frequency approaches the frequency of blades passing a given point. Fan speed is limited to reduce the continuous noise generated by the fan blades. Current models typically spin at around 800 RPM (13 Hz).