1. -by Shashank Vaidya.

2. What is a Transducer????
 It is a one, which converts one form of energy into
another form. Ex- microphone(electrical ->
sound),solar cell, lamp etc.
 Transducers are devices which for the purpose of
measurement convert physical input quantities into an
electrical output signal.

3. Transduction principle
 Resistive, Capacitive, Inductive
 Primary Input quantity
 Voltage, current, temperature, force, pressure etc..
 Material and technology
 SMT (Silicon Micro technology), MEMS(micro
electromechanical system)

4. RESISTIVE TRANSDUCERS
 Major types of Resistive transducers
• Potentiometers
• Resistive position transducer
• Resistive pressure transducer
• Strain Gauges
• Thermistors
• Light Dependent Resistor (LDR)

5. Potentiometers(POTs)
 Passive transducer.
 Resistive element.(graphite)
 Sliding contact-wiper.
 Motion of the sliding contact – translatory / rotational
movement or combination of both(helipots)
 Translatory-Used to vary the voltage levels.
 Rotational-angular displacement.

9.  Advantages
 Less cost
 Simple to operate
 More effeciency.
 Disadvantages
 Large force required to
move sliding contacts
 Wear n tear of sliding
contacts.

10. RESISTIVE POSITION
TRANSDUCER.
 Operating principle-a quantity to be measured causes
a resistance change in the sensing element.

12. Queries ?
 Thank you……………!!!!!!!!