Why the transformer core is laminated?
The iron core of a transformer is laminated to reduce eddy currents. Eddy currents are the small currents that result from the changing magnetic field created by the alternating current in the first coil.
They need to be minimized so they won’t disturb the flow of electricity from the primary coil to the secondary coil.
A laminated core of a transformer helps to minimize the energy losses due to eddy currents and improves the transformer efficiency.
The core is made of laminated silicon steel with special insulated coating to limit eddy current loss.