Explain the transformer construction?

A transformer is an electrical device that consists of two or more coils of wire wrapped around a core. The core is typically made of laminated iron or steel to provide a low reluctance path for the magnetic flux generated by the coils.

The primary coil is connected to an alternating current (AC) power source, which creates a changing magnetic field in the core. This changing magnetic field induces a voltage in the secondary coil, which can be used to power electrical devices.

The number of turns in the primary and secondary coils determines the voltage ratio of the transformer. By varying the number of turns in each coil, transformers can step up or step down the voltage of an electrical signal.

Transformers are commonly used in power distribution systems to increase or decrease the voltage of electricity for transmission over long distances. They are also used in electronic devices to convert voltage levels for different components.