3. ELECTRICAL TRANSDUCERS
● The electrical transducers is one which
converts the non-electrical quantity into the
equivalent electrical quantity.
●Non-electrical quantity such as force,
●Electrical quantity such as current , voltage
4. CLASSIFICATION OF TRANSDUCERS
●On the basis of transduction form used
●As primary and secondary transducers.
●As passive and active transducers.
●As analog and digital transducers.
●As transducers and inverse transducers
12. 4. Primary and Secondary Transducers
The transducer which sends the measurement and
converts them into another variables (like
displacement, strain etc.) and whose output forms the
input of another
16. SELECTION CRITERIA OF THE
●Insensitive to unwanted Signal
17. types of transducer
Position Transducers detect the position of
something which means that they are
referenced either to or from some fixed point or
Position Transducers can detect the movement of an
object in a straight line
using Linear Transducers or by its angular movement
using Rotational Transducers.
1 – Resistive Position Transducer
18. 2. Potentiometer transducers
It is defined as a three terminal variable resistor in which
the resistance is
manually varied to control the flow of electric current.
Potentiometers work by varying the position of a sliding
contact across a
uniform resistance. In a potentiometer, the entire input
voltage is applied across the
whole length of the resistor, and the output voltage is the
voltage drop between the
fixed and sliding contact as shown below. The resistance is
proportional to the position
19. 3-Strain Gauge Transducers
The strain gauge is an example of a passive transducer
that uses electrical resistance variation in wires to sense
the strain produced by a force on the wires.
The gauge is glued onto the device by an adhesive.
When an object shows physical deformation, its
electrical resistance gets change and that change is then
measured by gage.