Thursday, 26 May 2016

coming to the point of types of inductors there are six different types of inductors:they are 
1.Air core inductors
2.Ferro magnetic core inductors
3.laminated core inductors
4.ferrite core inductors 
5.toroidal core inductors and
6.variable inductors. 
Each differs in the point of power transmission and losses and their cores of constructions.
Air core inductors does not contains the magnetic core inside.its core contains plastic,ceramic,and other nonmagnetic materials.there are some limitations in this type example:radio frequency inductor contains different effects like skin,proximity,dielectric losses,parasitic capacitance effects which may lead to decrease the powergain etc.to overcome those effects we can apply the change in the coil rotations like basket-weave coils,spider web coils and litz wire etc can be used to their respective usages.
Ferromagnetic core inductors contains the magnetic core inside such as iron whic increases their inductance.however the magnetic properties of the core materials causes several side effects which alter the behavior of the inductor and require special construction as in the case of air core inductors such as core loss,eddy currents,hysteresis etc.
Laminated core inductors  Low-frequency inductors are often made with laminated cors to prevent eddy currents, using construction similar to transformers The core is made of stacks of thin steel sheets or laminations oriented parallel to the field, with an insulating coating on the surface.
Ferrite core inductors Higher frequencies, inductors are made with cores of ferrite. Ferrite is a ceramic ferri magnetic material that is nonconductive, so eddy currents cannot flow within it. The formulation of ferrite is xxFe2O4 where xx represents various metals. For inductor cores soft ferrites are used, which have low coercivity and thus low hysteresis loss.
Toroidal core inductors to decrease the power or frequency loss on the open two ends of the core this type of cored inductors are designed in which the cores is in closed loop or toroidal shape.Toroidal core coils are manufactured of various materials, primarily ferrite, powdered iron and laminate cores.
and finally variable inductors this is used are by sliding or screwing the core of ferrimagnetic materials differ in their concentrations variable inductances can be obtained.

Applications and mini projects can be learnt through our blog supersscience .blogspot.com in further posts

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