03 Transducer

Transducer

Converts one form of energy to another.

Need of Transducer-

Convert physical signal into electrical signal… 

Electrical signal can be easily processed, manipulate and stored….

Types of Transducer:

1.Primary and Secondary

2.Active and Passive

3.Electrical and Mechanical

4.Analog And Digital

5.Transducer and inverse transducer

1.Primary and Secondary

2. Active And Passive Transducer 

Figure 02 :Active Transducer

Figure 03: Passive Transducer

Resistive Transducer:

Figure 04: Resistive Transducer.

Figure 05: Equivalent circuit.

Capacitive Transducer

Figure 06: Capacitive Transducer.

Inductive Transducer:

Figure 07: Inductive Transducer.

Variable Permeability type Inductive Transducer

Figure 08: Variable Permeability type Inductive Transducer.

Reluctance Type Inductive Transducer

Figure 09: Reluctance type Inductive Transducer.

Figure 10: Differential Inductive Transducer.

Linear Variable Differential Transformer

Figure 11:Linear variable Differential Transducer.

Figure 12:Linear variable Differential Transducer Output.

Rotary variable Differential Transformer

Figure 13:Rotary variable Differential Transducer.

Piezo Electric Transducer

Figure 14 :Piezoelectric Transducer

Parameters of Transducer

1.Linearity

2.sensitivity

3.Dynamic Range

4. Repeatability

5.Physical Size

Selection Criterion of  Transducer

1.Sensitivity

2.Operating Range

3.Accuracy

4.Frequency response and resonance frequency

5.Environmental Capability

6.Minimum sensitivity

7.Uses and ruggedness

8.Electrical parameter