Difference between sensor and Transducer | Sensor vs Transducer

This page compares Sensor vs Transducer and mentions difference between Sensor and Transducer.


Definition: The physical device which converts one form of energy into the other form of energy is known as transducer.
Example : The RF antenna converts electrical signal into electromagnetic form and viceversa. OR acceleration to voltage OR voltage to pressure conversion etc.

sensor and transducer in communication chain

The transducers can be classified as per figure-1 above into following types.
• Active and passive
• Analog and digital
• Primary and secondary
• Transducer and inverse transducer

Transducer types


Definition: The physical device which senses physical quantity and converts it in the analog from. This analog form can be measured electically by instrument or user. The various output forms are available as per application of need e.g. capacitance, voltage, inductance, resistance etc.
Sensor can be part of transducer at the initial stage during transduction.

Physical Parameter -> | Sensor | -> Electrical Output

In the figure-1 above microphone, RF antenna and speaker are transducers. In the transmitter part, microphone is also considered as sensor as it converts acoustic energy into electrical form. The other sensors include temperature sensor, humidity sensor, position sensor, force sensor etc.

Transducer Related Links

Difference between active transducer and passive transducer
Difference between analog transducer and digital transducer
Difference between primary transducer and secondary transducer

What is difference between or comparison between

Following links mention difference or comparison between various equipments and terms:
comparison between SPI and I2C
difference between PXI and PCI
Microscope vs Telescope
Amplitude Modulation vs Angle Modulation
difference between modem and router
Air Fuel Ratio Sensor vs O2 Sensor
Radiometer vs Spectrometer vs Spectroradiometer
Clamp meter vs digital multimeter
Colorimeter vs Spectrophotometer
difference between Prism and Grating
difference between Venturi meter and Orifice meter
difference between Lux and Lumens