Transducers

Caupayan, JeddaAnne G.                                                                                                                             BSEd-4

Transducers

Converting is not just in measurements but also in energy. In this chapter, you will know more about how energy converts into another form. You may wonder why we have light through electricity and modulate our voice with the use of microphone; it is because of this another topic that you will encounter in this chapter, the “transducers”.

Definition

1.       Transducer is one of the electronic devices that coverts one form of energy into another.

2.       Transducer plays a very important role in instrumentation. Instrumentation is the heart of industrial applications. Instrumentation is the art and science of measuring and controlling different variables such as flow, level, temperature, angle, displacement etc. A basic instrumentation system consists of various devices and one of these is transducer.

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Types Transducers

1.       Electrical Transducer

-          a type of transducer that converts mechanical energy into electrical energy

-          The input given to the electrical transducer can be in different forms like the form of the displacement, strain, velocity, temperature, flow etc and the output obtained from them can also in different forms be in the form of current, voltage and change in resistance, inductance and capacitance. The output can be measured easily and it is calibrated against the input, thus it enables the measurement of the value of the input.

-          most commonly used electrical transducer is potentiometer, and this device was already discussed in the previous chapter

2.       Piezoelectric Transducer

-          a special type of sensor

-          a type of transducer that converts mechanical energy into electrical energy and similarly it can also convert from electrical energy to mechanical energy

-          used for detecting the drummer’s sticks impact in electronic drum pads. These are also used for the detection of muscle movements which can be termed as acceleromyography

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1.       Temperature Transducer

-          a type of transducer that converts a temperature of a system into mechanical energy or electrical energy which is then sent to control the temperature of the system

-          used for measuring air temperature like in heating, air conditioning, ventilation and the like

Temperature based fan regulator

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1.       Ultrasonic Transducer

-          a  type of transducer that is used for measuring the distance based on reflection of sound

Ultrasonic Sound Reflecting Means of Distance Measurement

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Applications

                Transducers can be found in many different appliances like microphone, motor, electric fan, air-conditioner, light bulb and the like. Those mentions above are appliances that converts one form of energy into another that would result to a comfortable life and simpler as well.

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