This presentation discusses transducers, which convert one form of energy to another. It defines transducers and provides examples like temperature, position, and displacement transducers. The document then classifies transducers based on the transduction form used, whether they are primary/secondary, active/passive, analog/digital, or inverters. It also discusses electrical transducers that convert non-electrical quantities like force, displacement, and temperature to electrical quantities. Specific transducers are then described in more detail like thermocouples, RTDs, thermistors, LVDTs, strain gauges, and Bourdon tubes. The presentation concludes with transducer applications, advantages, and disadvantages.