What is a ferrite used in a transformer???

Question

Sorry, for my wrong English!!!!

Question: "Why is a ferrite needed in a transformer? Can it work without it?"

Answer 1

There are many types of transformers. Ferrite is used only in some, and probably a minority.

Iron, iron laminations, air, are other possibilities.

Answer 2

A ferrite is a ferrous material used to improve the efficiency fo the transformers operation. It accomplishes this by incresing the magnetic field strength at the core of the transformer.  Most ferrites are made of powdered iron encased in a dielectrric material. The iron has a high permeability and by using a powdered form, one avoids the production of parasitic currents in the core materials. Ferrit ecores however only work with high frequecy's.

Lower frequency and larger transformers use sheet steel laminations to achive the same purpose though some hysteritic losses can form in such a construction.

http://en.wikipedia.org/wiki/Transformer...

Astrobuf

Answer 3

Ferrite replaces the traditional " close E sharp" steel plated cord. It has more efficiency and higher Q value.  It is widely used in all higher frequency device. It also can be designed to work on low frequence 60 c/s  with  steel rounded  cord.

Ferrite coil or transformer have smaller size compare to the E sharp type.

Without using ferrite to make a transformer,it requires 10 times or more windings to do the same work.

Your answer is YES, you can make a transformer without using ferrite. This transformer can be make of pure copper wires. It shall be 10 times bigger or more than the ordinary transformer.