Transducer
device that converts a signal in one form to another form
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.
Types
Mechanical transducers convert physical quantities into mechanical outputs or vice versa;
Electrical transducers convert physical quantities into electrical outputs or signals. Examples of these are:
a thermocouple that changes temperature differences into a small voltage;
a linear variable differential transformer (LVDT), used to measure displacement (position) changes by means of electrical signals.
Sensors, actuators and transceivers
Transducers can be categorized by the direction information passes through them:
A sensor is a transducer that receives and responds to a signal or stimulus from a physical system. It produces a signal, which represents information about the system, which is used by some type of telemetry, information or control system.
An actuator is a device that is responsible for moving or controlling a mechanism or system. It is controlled by a signal from a control system or manual control.
The public source identifies “Transducer” as device that converts a signal in one form to another form. This brief keeps that definition visible, then builds a research path around Transducer, device and converts.
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A short description can identify a subject without explaining its stakes. For “Transducer”, the useful work is to connect “device that converts a signal in one form to another form” to the records capable of establishing context and consequence.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q215928. The Library of Congress control number is sh85136892. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
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This entry incorporates text from “Transducer” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.