Transformers are essential devices for electrical systems. Their job is to move electric energy from one circuit to another. This is done through electromagnetism. Transformers will not change in frequency. There are various types of transformers. One is a step-down transformer, in which the voltage input exceeds the voltage output.
Another example is the step-up transformer, which is the opposite of step-down. With this transformer, the voltage output exceeds the voltage input. There are also other transformers that have the same information and output voltage. These devices can come in all different sizes, and they are also used in smart grids.
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