Types of Capacitors There are two types of capacitors. If the capacitance of the capacitors is a fixed value, as in most of the cases, they are known as fixed value capacitors. But in radio receivers, for tuning purposes, capacitors with variable capacitance are used.This can be achieved by having a set of movable vanes with respect to another set of fixed vanes. Capacitors can also be classified according to the nature of dielectric employed as
(1) air capacitors (2) paper capacitors (3) mica capacitors (4) ceramic capacitors and (5) electrolytic capacitors