What is Electronics? | Importance of Electronics

What is Electronics ? Electronics: The branch of engineering science which deals with current conduction through a vacuum or gas or semiconductor called *electronics. Electronics essentially deals with electronic devices and their utilization. A device is that during which current flows through a vacuum or gas or semiconductor. Such devices have valuable properties that enable … Read more

Atomic Structure |Structure of Elements

Atomic Structure According to modern world theory, the matter is electrical in nature. All the materials are composed of very tiny particles called atoms. The atoms are the building bricks of all things in the visible world. An atom composed of a central nucleus of positive charge around which tiny negatively charged particles, called electrons … Read more

Energy Of An Electron | Valence Electrons

Energy Of An Electron? Energy Of An Electron: Since electronics deals with small particles called electrons, these tiny particles require a more detailed study. As discussed before, an electron is a negatively charged particle having nearly zero mass. Some of the important most properties of an electron are : Charge on an electron, e = … Read more

Free Electrons | Voltage Source | Constant Voltage Source

Free Electroncs Free Electrons: The valence electrons of different materials have different energies. The larger the energy of a valence electron, the weaker it is bound to the nucleus. In some substances, particularly metals, the valence electrons possess huge energy that electrons are very loosely attached to the nucleus. These loosely attached valence electrons motion … Read more

Constant Current Source | Conversion of constant Current Source

Constant Current Source A voltage source that has a very huge internal*impedance as compared with external load impedance or resistance is known as a constant current source. In that case, the load current approximately remains the same when the output voltage changes. Fig. 1.12 (i) illustrates a constant current source. It is a direct current … Read more

Maximum Power Transfer Theorem | Applications

Maximum Power Transfer Theorem Whenever the load is connected across a voltage source, power is transferred or moved from the source to the load. The amount of power transferred will depend upon the resistance of the load. If the resistance of load RL is made equal to the internal resistance Ri of any source, then … Read more

Thevenin’s Theorem | Properties of Thevenin’s Theorem | Problems

Thevenin’s Theorem Sometimes it is desirable to determine a particular branch current in a circuit as the resistance of that branch is changing while all other resistances and voltages remain constant. For instance, in the circuit shown in Fig. 1.23, it may be required to determine the current through RL for five values of RL, … Read more

Norton’s Theorem | Chassis and Ground| Properties

What is Nortons Theorem Fig. 1.38 (i) shows a circuit enclosed in a box with A and B terminals brought out. The network in the box may have any number of e.m.f. sources and resistors connected in any manner. But according to Norton, the complete circuit behind A and B terminals can be changed by … Read more