A device that transforms changes in a physical property, such as pressure or brightness, into an electrical signal is known as a signal converter. Energy, torque, light, force, location, acceleration, and other physical characteristics are all common inputs, as are other physical attributes. Many transducers have an input signal that is subsequently translated into a proportionate electrical signal by the device.

A transducer is a device that transfers energy from one form to another by changing the frequency of the energy. A transducer is a device that transforms a signal in one type of energy to a signal in another form of energy. When a sensor receives and reacts to a signal or stimulus from a physical system, the sensor is referred to as a transducer. It generates a signal that contains information about the system and that is utilized by a telemetry, information, or control system of some kind to communicate with it.

Basic kinds of Transducers are Mechanical Transducers and Electrical Transducers, with the former being the more common. A mechanical transducer is a device that reacts to changes in physical quantities or conditions by changing the amount of mechanical quantity available.

Read "How to Select a Transducer" at MechCollege to learn more about the choosing of transducers and other related topics.

Piezoelectric transducers are often required to be installed near structurally important locations where significant amounts of anticipated stress and strain are expected.

A multiple reflection phenomenon occurs at crystal interfaces when the acoustic impedances on each side and on top of the crystal are different from one another. In this instance, a pair of stress pulses with oppositely signed amplitudes are generated at each crystal border. For the purpose of developing a more complete transducer equivalent circuit model that takes into account these effects in both the time and frequency domains, it is necessary to discuss the geometrical characteristics of transducers, their construction, and the piezoelectric materials used in their construction.