Passive Component - Inductor
Passive Component - Inductor INDUCTORS • It is a coil wound on a core or former of a suitable material. • Inductor is nothing but a coil wound on a core or former of a suitable material. Fixed Inductor The inductors are classified according to the type of cores used as follows: (1) Air Core Inductor • It consists of number of turns of wire wound on a former made of ordinary cardboard. • Since there is air inside the former, the inductor is called as air core inductor. • The air core inductor has no core losses even at high frequencies, and low inductance limited to value in µH or mH range. (2) Iron Core Inductor • Iron-core inductor is a coil of wire wound over solid or laminated iron-core. • The iron core is laminated to avoid eddy current losses. • The laminated iron core consists of thin iron laminations pressed together but insulated from each other. • By putting the iron core inside the coil, the inductance of the coil increases by as many times as the relati...