noun

transducer

tranz-DOO-ser/trænzˈduːsər/

A device that converts energy or signals from one form to another.

The solar panel acts as a transducer, converting sunlight into electricity.

A small photovoltaic panel receives sunlight and powers a visibly glowing bulb through a clearly connected pair of wires, showing conversion of light energy into electrical energy.

Etymology

transLatinacross, beyond

+ducLatinto lead

+erEnglishthing that performs an action

The image is of ‘leading across’ or transferring. Applied to a device, it describes carrying energy over from one form into another, the meaning already used in telephone technology.

In context

The Thought Emporium12:32

short the two wires to dissipate any charge that built up from the transducer deforming from heat

Punching Water So Hard LIGHT Comes Out - Sonoluminescence

More examples

A speaker is a transducer that converts electrical signals into sound.
The pressure transducer sends an electrical signal to the gauge.
Ultrasonic transducers turn electrical energy into vibrations that help clean jewelry.

Forms

transducer · transducers

transduce verb — Convert energy or signals into another form.

transduction noun — Conversion of energy or signals between forms.

Similar words

converter: Broader term also used for changing data or materials.
sensor: Emphasizes detecting physical conditions rather than energy conversion itself.