Table of Contents
Transducers essentially change one type of energy into another. Electrical transducers are those that change non-electrical forms of energy into electrical forms of energy. The figure below depicts the block diagram of an electrical transducer.
So The output of an electrical transducer, as depicted in the figure, will have electrical energy. An electrical transducer’s output is equal to its non-electrical input in terms of energy.
Types of Electrical Transducers
Electrical transducers can generally be divided into the following two categories.
- Active Transducers
- Passive Transducers
Now, let us discuss about these two types of transducers briefly.
So Active transducers are those that have the ability to generate electrical quantities like voltage and current. Due to the fact that it doesn’t require an external power source, it is also known as a self-generating transducer.
The block diagram of active transducers is shown in below figure.
The active transducers will, as depicted in the figure, generate an electrical quantity (or signal) that is equivalent to the non-electrical input quantity (or signal).
So Here are some instances of active transducers.
- Piezo Electric Transducer
- Photo Electric “
- Thermo Electric “
Passive transducers are those that cannot generate electrical quantities like voltage or current. However, it causes a change in a passive component, such as a resistor (R), inductor (L), or capacitor (C). An external power source is needed for passive transducers.
The block diagram of passive transducers is shown in below figure.
According to the variation in the non-electrical input quantity (or signal), the passive element will vary when using a passive transducers, as depicted in the figure.
Following are the examples of passive transducers.
- Inductive Transducer
- Resistive “””
- Capacitive “””