How does the universal voltage transformers work?

Transformers have components that work on the voltage in and out, the amperage in and out, and regulate and stabilize the whole output.



A transformer has two coils, a primary and secondary. They are not touching each other.



The primary coil creates a magnetic field when an AC current passes through it.



Because of magnetic induction, the transformer creates a potential difference between the primary coil and secondary coil.



That magnetic potential creates an electrical current in the second coil.



The amount of current it produces is determined through the power of the magnetic field, which is proportional to the surface area of the coils.



If you have coils that have variable surface areas, you can alter the way they respond to the current coming in, and the amount of current they produce.



All together, that's a simple description of how they work.How does the universal voltage transformers work?It may be an autotransformer with a movable tap.