Transducers

thumb|Different types of light sensors A sensor is often defined as a device that receives and responds to a signal or stimulus. The stimulus is the quantity, property, or condition that is sensed and converted into electrical signal.

thumb|AKG (company)|AKG headphones on a stand

thumb|upright=1.1|Piezoelectric balance presented by Pierre Curie to [[Lord Kelvin, Hunterian Museum, Glasgow]]

A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. In motion control systems, potentiometers are frequently used as position sensors to provide analog feedback to a controller, allowing for precise tracking of mechanical movement. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

A transducer is a device that usefully converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another. Transducers are often employed at the boundaries of automation, measurement, and control systems, where electrical signals are converted to and from other physical quantities (energy, force, torque, light, motion, position, etc.). The process of converting one form of energy to another is known as transduction.

thumb|MEMS microcantilever resonating inside a scanning electron microscope thumb|Proposal submitted to DARPA in 1986 first introducing the term "microelectromechanical systems"

devices that measure magnetic field strength; used to detect the Hall effect

polymer that exhibits a change in size or shape when stimulated by an electric field

[[Image:Synchro.JPG|frame|Schematic of a synchro transducer. The complete circle represents the rotor. The solid bars represent the cores of the windings next to them. Power to the rotor is connected by slip rings and brushes, represented by the circles at the ends of the rotor winding. As shown, the rotor induces equal voltages in the 120° and 240° windings, and no voltage in the 0° winding. [Vex] does not necessarily need to be connected to the common lead of the stator star windings. |right]]

specialized loudspeaker that reproduces a portion of the audible frequency range

Macedonite is a mineral named by Radusinović and Markov in 1971. It has the elemental formula PbTiO3 and exhibits tetragonal crystal system. The type locality is near Crni Kamen, Selecka Planina, Prilep Municipality, North Macedonia. It can be confused with perovskite. It is found in an amazonite-rich area.

device that measures information arising from physical interaction with its environment

Mechanical timekeeping device that is driven by a spring that winds by motion of the wearer

mirror-based electronic display technology

device that emits coherent acoustic radiation

Component for guiding radio waves

Piezomagnetism is a phenomenon observed in some antiferromagnetic and ferrimagnetic crystals. It is characterized by a linear coupling between the system's magnetic polarization and mechanical strain. In a piezomagnetic material, one may induce a spontaneous magnetic moment by applying mechanical stress, or a physical deformation by applying a magnetic field.

Type of transducer

or interdigitated transducer, a sensor and transmitter for a surface acoustic wave

measurement of electric current