What is a transformer used for?

 

Because the transformer can change the electric energy into the way of high voltage and low current when it is transmitted, it will be transformed back when it is used, which greatly reduces the loss of electric energy in the process of transportation, and makes the electric energy transported to farther local areas economically. In this way, power plants can be built locally, far from cities. Until now, most of the world's electricity had to go through a series of transformers before it finally reached its users. Thus, the function of the transformer is still very large. Once the transformer is out of order, it will cause power failure in a large area, the resulting consequences are unimaginable.