To reduce eddy currents in transformer cores, which material is used in laminating?

The use of silicon steel in laminating transformer cores is effective in reducing eddy currents because silicon steel is a type of electrical steel that has a low hysteresis loss and high electrical resistance. When transformer cores are laminated using silicon steel, individual thin layers of steel are insulated from one another, which limits the flow of eddy currents that can form within the core material when it is subjected to alternating magnetic fields.

The layers of silicon steel help ensure that these circulating currents, which can generate heat and reduce the efficiency of the transformer, are minimized. This results in a more efficient transformer that produces less energy loss. The combination of magnetic properties and the insulating layers makes silicon steel an optimal choice for transformer core applications.