In the AC circuit, the device that increases or decreases the voltage is called a transformer. The transformer can convert any value of voltage into the voltage value we need with the same frequency to meet the transmission, distribution and use requirements of electric energy.
For example, the electricity from a power plant has a low voltage level, and the voltage must be increased to be transported to a distant power consumption area. The power consumption area must be reduced to a suitable voltage level to supply power equipment and daily electricity. Equipment.