We use ‘E’ and ‘I’ shape silicon steel lamination to make the core of the shell-type transformer. Which are created by using electrical steel laminations. Silicon Steel, also known as electrical steel, is steel with silicon added to it. Adding silicon to steel increases its electrical resistance, improves the ability of magnetic fields to penetrate it, and reduces the steel’s hysteresis loss.
Shell type transformers are mainly used for low voltage applications and are very often used in low voltage power circuits as well as in electronic circuits. These transformers are also used to optimize the expenditure of a circuit since these transformers have square or rectangular cross-sectional core which costs less.