|The active transducer is also called as self generating type transducer.
||The passive transducer is also called as externally powered transducer.
|The active transducer does not require any auxiliary (external) power supply.
||The passive transducer requires auxiliary (external) power supply for transduction.
|The signal conversion is simpler.
||The signal conversion is more complicated.
|The energy required to produce output is obtained from the physical quantity.
||They also derived part of the power required for conversion from physical quantity under measurement.
|Example of active transducer is bourdon tube.
||Example of passive transducer is LVDT (linear variable differential transformer).
|It generates electric current or voltage directly in response to environmental stimulation.
||It gives a change in some passive electrical quantity, such as capacitance, resistance or inductance, as a result of stimulation.