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TYPES OF TRANSDUCERS








                 1
                             Active transducers



                        do  not  require  external  power  and  can
                        produce an analog voltage or current.


                            this transducer is self generating.

                    Example; thermometer and piezoelectric.


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                2
                            Passive transducers


                      require an external power to operate, and
                      the output is a measure of some variation

                      in  passive  components  like  resistance,
                      inductance or capacitance.

                              Example; Strain gauge,
                              resistance temperature

                          detector (RTD) and thermistor.






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