Transducer Transducer Strumble Head Lighthouse Category="Electrical components"Category="Transducers"A transducer is a device, usually electrical or electronic, that converts one type of Energy to another. Most transducers are either sensors or actuators.

List of transducers

Electrochemical:
Electromechanical:
- Actuator
- Circuit breaker
- Dynamo
- Electroactive polymers
- Galvanometer
- MEMS
- Motor, Linear motor
- piezoelectric
- Quartz
- Relay
- Servomechanism
- Strain gauge used in weight/force measuring.
- Switch
Electroacoustic:
- gramophone pick-up
- Hydrophone - converts changes in water pressure into an electrical form
- Loudspeaker, earphone - converts changes in electrical signals into acoustic form
- Microphone - converts changes in air pressure into an electrical signal
- piezoelectric crystal - converts pressure changes into electrical form
Photoelectric:
- Laser diode, Light-emitting diode - convert electrical power into forms of light
- Photodiode, phototransistor, photomultiplier tube - converts changing light levels into electrical form
- Solar cell - converts light energy into electrical energy
Electromagnetic:
- antenna (electronics) - converts airborne RF signals into electrical form
- Cathode ray tube (CRT) - converts electrical signals into visual form
- Fluorescent lamp, light bulb - converts electrical power into visible light
- Magnetic cartridge - converts motion into electrical form
- photocell or light-dependent resistor (LDR) - converts changes in light levels into resistance changes
- Reed switch - converts a strong magnetic field into a switch activation
- Tape head - converts changing magnetic fields into electrical form
- Hall effect sensor - converts a magnetic field level into electrical form
Electrostatic:
- Electrometer
- Liquid crystal display (LCD)
Thermoelectric:
- Thermocouple
- Peltier cooler
- Thermistor (includes PTC resistor and NTC resistor)
Other:
- Geiger-Müller tube used for measuring radioactivity.
Electronic. These components change one electrical parameter in response to another. By some definitions these are electronic components, not transducers:
- Diode
- Gyrator
- varicap diode, varactor diode, tuning diode
- Negative impedance converter, NIC
- Schottky diode
- Transistor, Field effect transistor (FET)
- Transorb
- tunneling diode
- Varistor
- voltage-dependent resistor
- Zener diode
Electrical. These components change one electrical parameter in response to another. By some definitions these are passive electronic components, not transducers:
Mechanical:
- Gear

Sources/references

The Danish Wikipedia

External links

whatis: transducer
Federal Standard 1037C, August 7, 1996: transducer
American National Standard for Telecommunications - Telecom Glossary 2000: transducer