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:
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.
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.
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.
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.