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Active transducer & Passive transducer simple explanation. By Yuvi - Study Point

Hey everyone, today we are going to learn about Active transducers & Passive transducers.
So, without wasting any time let's get started.

Why we use Active & Passive transducers?
  • Physical forces like pressure, displacement, etc are difficult to measure and for measuring them, devices are required which converts the physical quantity into measurable energy. 
  • And this conversion or we can say the function is done by the help of transducer. 
  • Which converts the physical or non-measurable quantity into a measurable quantity.
ACTIVE TRANSDUCER
  • Active transducer does not require or does not need any power source for their operation.
  • For example ~ thermocouple, photovoltaic cell, etc. 
  • Active transducers produce an electrical signal which is proportional to the input physical quantity.
  • Additional energy is not required in active transducers.
The design of the active transducer is simple or complicated? 
  • Its design is very simple. Active transducers output is obtained in the form of voltage or current.
PRINCIPLE
  • It works on the principle of conversion of energy from one form to another form.
  • They self develop their electrical output signal that is why they also know as the self-generating transducer. 
PASSIVE TRANSDUCER
  • The passive transducer is not self-generating type. It's internal parameters like capacitance, inductance & resistance changes because of the input signal.
  • Forex ~ thermistor, differential transformer, etc.
  • The passive transducer takes power from the external energy source for transduction and transduction means the conversion of energy from one form to another.
  • And the output is obtained by changing the physical properties of the material. 
The design of Passive transducers are complicated or simple?
  • The design of a passive transducer is complicated.
  • There is no additional energy source and the resolution of the passive transducers is high.
The link and the video of Active and Passive transducers.



{ Please go and check out my channel and this video.
Because I have explained this topic ( Active and passive transducers ) in a simple or easiest way possible.}

Thank you!

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