Transducers, including: Microelectromechanical Systems, Piezoelectricity, Relay, Potentiometer, Sensor, Transducer, Electroactive Polymers, Orthomode ... Interdigital Transducer, Ionophone

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More info: A transducer is a device that converts one type of energy to another. The conversion can be to/from electrical, electro-mechanical, electromagnetic, photonic, photovoltaic, or any other form of energy. While the term transducer commonly implies use as a sensor/detector, any device which converts energy can be considered a transducer.