Transformers are electronic components that convert electrical energy between various voltages or between various currents. Transformers convert electrical energy from an input voltage to an output voltage and are therefore used in the distribution of electrical energy, power draw devices and other devices.

Transformers are available in a variety of sizes and shapes and are made from a variety of materials. Transformers are usually made of metallic materials such as copper and aluminum, and they transmit electric current through these materials.

Transformers are very commonly used in electronic circuits and there are transformers available with a variety of properties suitable for a variety of applications. Transformers can be sensitive to environmental conditions and should therefore be handled with care.