What Is A Transducer, and Where Are They Used In A Home?

Circuits and projects are built using electronic and electrical components. These components can be passive or active components like transducers, sensors, receivers, transmitters, and modules like Bluetooth, WiFi, RFID, GSM, GPS, and the like.  There are important processes performed by these circuits and projects; when they go smoothly, the desired result will be achieved. And one of those common processes is called transduction.

Transduction is a process involving the conversion of one form of energy to another. Note that there needs to be an element of sensing to determine the input energy and then using an element of transduction to convert it to another form.

In the day to day life of people especially in a household, transducers are everywhere. The common example is the microphone used in mobile phones, telephones. It can also be found in loudspeakers, thermometers, pressure sensors and antenna.

Definition of Transducers

A transducer is a device that electronically converts a form of energy to another. By energy, it can be electrical, mechanical, chemical, light, acoustic, thermal, electromagnetic energy, and other forms of energy.

In the example of the microphone in phones, the sound energy is converted into electrical signals. It will then be amplified into a certain preferred range. Once done, it shall then be converted to audio signals to be transmitted to the loudspeaker. Another example is the light bulb where electrical energy is changed into light energy.

Conditions of Transducers

The first condition of a transducer is the dynamic range which is the ratio found in the highest to the lowest amplitude to ensure the efficiency of the energy translation. The higher the range dynamically, the more precise and sensitive the conversion will be.

Repeatability as another condition is the capability of generating the same output every time a similar input is being stimulated. As for the noise of transducers, it can be electrical because of the presence of thermal energy within the circuits. Note also that small signals can be easily more corrupted by noise than larger ones.

Another property or condition of transducers is the hysteresis. To determine the output of transducers will not depend solely on the current input for it also considers the past input. Take an actuator as an example. It uses a gear train that poses some reaction that when its movement direction overturns, it will be resulting to a deceased zone just before the actual output overturns by a certain play within the gear’s teeth.