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  2. Computer fan control - Wikipedia

    en.wikipedia.org/wiki/Computer_fan_control

    At the top of the case is a fan controller. Fan control is the management of the rotational speed of an electric fan. In computers, various types of computer fans are used to provide adequate cooling, and different fan control mechanisms balance their cooling capacities and noise they generate.

  3. Piezoelectric microelectromechanical systems - Wikipedia

    en.wikipedia.org/wiki/Piezoelectric_micro...

    A piezoelectric microelectromechanical system (piezoMEMS) is a miniature or microscopic device that uses piezoelectricity to generate motion and carry out its tasks. It is a microelectromechanical system that takes advantage of an electrical potential that appears under mechanical stress .

  4. Piezotronics - Wikipedia

    en.wikipedia.org/wiki/Piezotronics

    The introduced piezoelectric field is perpendicular to electron transport direction, just like applying a gate voltage in the traditional field-effect transistor. Thus the electron transport properties will also be changed. [10] The materials for piezotronics should be piezoelectric semiconductors, [10] such as ZnO, GaN and InN.

  5. 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.

  6. Tweeter - Wikipedia

    en.wikipedia.org/wiki/Tweeter

    Dome tweeter with a membrane with 25 mm diameter made from titanium; from a JBL TI 5000 loudspeaker box, c. 1997. A dome tweeter is constructed by attaching a voice coil to a dome (made of woven fabric, thin metal or other suitable material), which is attached to the magnet or the top plate via a low compliance suspension.

  7. Amplified piezoelectric actuator - Wikipedia

    en.wikipedia.org/wiki/Amplified_piezoelectric...

    The space industry's interest in amplified piezoelectric actuators is due to the high power density of these actuators, high positioning accuracy, high reliability, and low power losses when used in quasistatic operation. Amplified piezoelectric actuators have no sliding parts due to the flexural hinges and do not require lubrication.

  8. US appeals court halts enforcement of anti-money laundering law

    www.aol.com/news/us-appeals-court-halts...

    By Nate Raymond (Reuters) -A U.S. appeals court has halted enforcement of an anti-money laundering law that requires corporate entities to disclose the identities of their real beneficial owners ...

  9. Ultrasonic motor - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_motor

    An ultrasonic motor is a type of piezoelectric motor powered by the ultrasonic vibration of a component, the stator, placed against another component, the rotor or slider depending on the scheme of operation (rotation or linear translation).

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