In this topic, you study Air Core Inductor.
Simplest form of air cored inductors consist of a coil wound on either ceramic or plastic former. Because of the absence of high permeability core, the size of the air-cored inductor is relatively large and its inductance is small as compared to that of the iron-cored or ferrite-cored inductor.
Applications of Air Core Inductor
Inductors of this type are suitable for high frequency applications.