Electronics and its importance

What are electronics?

The branch of engineering dealing with current conduction through a vacuum or gas or semiconductor is known as electronics.

Electronics essentially deals with electronic devices and their uses.

An electronic device is that in which current flows through a vacuum or gas or semiconductor.

Importance of electronics

Electronics has gained a lot of importance due to its numerous applications in the industry.

The electronic devices can perform the following functions:

  • Correction
  • strengthening
  • Check
  • Generation

(i) Correction:

The conversion of ac to dc is called rectification.

Electronic devices can convert alternating current into direct current with a very high efficiency. This is shown in fig.1 below.

This DC power supply can be used for battery charging, DC generator field power, electroplating, etc.

(ii) Reinforcement:

The process of increasing the strength of a weak signal is known as amplification.

Electronic devices can perform the task of amplification and thus act as amplifiers as shown in Figure 2 below.

The amplifiers are used in many different ways. For example, an amplifier is used in a radio set where the weak signal is amplified so that it can be heard loudly. Likewise, amplifiers are used in public address systems, television etc.

(iii) Control:

Electronic devices find wide applications in automatic control. With the aid of such devices, for example, the speed of a motor, voltage across a refrigerator, etc. can be controlled automatically.

(iv) Generation:

Electronic devices can convert direct current to alternating current of any frequency as shown in Figure 3 below.

In performing this function, they are known as oscillators. The oscillators are used in many different ways. For example, electronic high-frequency heating is used for annealing and curing. Apart from this check out the best electronic invention of all time.

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