Tech Trill

An inductor is an electro-magnetic (coil) which opposes any change in the current flowing through it.It consists of number of turns of fine wire, wound in a spiral or cyclinderical form, to obain concentrated feild parallel
to the axis of the coil.
Applications of Inductors:-
a)Communication circuts
b)Radio and T.V circuts
c)Filter circuts
d)Telemetering equipment
e)Modulation and Demodulation circuts
f)Radar navigation devices
g)Tuning circuts to select the requried signal
h)Fluorescent lamp sets to create surge voltage etc.
Types of inductors

:-
1)Based on the core material used,inductors are classified as
  a)Iron cored inductors-used for low frequency
  b)Air cored inductors-used at high frequency
  c)Powdered iron cored inductors
  d)Ferrite cored inductors
  e)Varaible inductors
2)Based on the operating frequency they are cllassified as
  f)Audio frequency (AF) inductors
  g)Radio frequency (RF) inductors.