Basics of Semiconductors

Semiconductors are materials that have a conductivity between conductors (usually metals) and non-conductors or insulators (such as most ceramics). Semiconductors can be pure elements, such as silicon or germanium, or compounds such as gallium arsenide or cadmium selenide. In a process called doping, small amounts of impurities are added to pure semiconductors, causing large changes … Read more

Materials of Electronic Components

The matter is made up of molecules that consist of atoms. According to Bohr’s theory, “the atom consists of a positively charged nucleus and a number of negatively charged electrons which revolve round the nucleus in various orbits”. When an electron is raised from a lower state to a higher state, it is said to … Read more

What is Current, Voltage, Resistance, and Ohm’s Law

Electric Charge Electric charge is the physical property of matter due to which it experiences a force when placed in an electromagnetic field. Positive and negative electric charges are two types of charge that are usually carried by the charge carriers, protons, and electrons. Energy is created by the movement of charges. Depending on the … Read more