Core transformer in the main part of the magnetic circuit. Usually it consists of a high silicon content, thickness, respectively 0.35mm \ 0.3mm \ 0.27mm, the surface coated with insulating paint hot or cold rolled silicon steel sheet piled up.
Iron legs and cross piece into two parts, legs sheathed with windings; cross-piece is closed magnetic purposes.
The basic form of the core structure determined formula shell two.
It is part of the transformer winding circuit, which is double insulated flat wire or silk bag enamelled round wire wound into.