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.

https://youtu.be/XvjwYBDxu9k

{ 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!