1. Main role

1.Voltage conversion：

Through the principle of electromagnetic induction, the transformer can efficiently convert the high voltage at the input terminal to the low voltage at the output terminal, or vice versa.This ability allows electrical energy to be flexibly converted between different voltage levels to meet the needs of different scenarios and equipment.For example, in long-distance transmission, line losses can be reduced by increasing the voltage, and the voltage can be reduced to a safe and usable level through a transformer after reaching the client.

2.Current conversion：

While the transformer converts the voltage, it also realizes the corresponding conversion of the current.According to the law of conservation of energy, when the voltage rises, the current will decrease accordingly; when the voltage drops, the current will increase.This characteristic allows the transformer to adjust the current size as needed to meet the current requirements of different equipment.

3.Impedance conversion：

Using the turns ratio of the transformer, the impedance conversion can be realized.This feature is essential for devices and systems that need to match different impedance.By adjusting the turns ratio of the transformer, the energy transmission efficiency can be optimized and energy loss can be reduced.

4.Electrical isolation：

The primary and secondary windings of the transformer are insulated from each other, which makes the transformer have excellent electrical isolation function.This isolation function can effectively prevent the spread of electrical failures and protect the safety of equipment and personnel.

2. Common uses

1.Power transmission and distribution：

In the power system, transformers are indispensable core equipment.It is used to deliver the electrical energy generated by the power plant to distant users in the form of a high voltage, and to reduce the voltage to a level suitable for use at the client end.This kind of high and low voltage conversion not only improves the transmission efficiency, but also ensures the safety of users' electricity consumption.

2.Power supply for electronic equipment：

In modern society, various electronic devices such as computers, televisions, audio, etc. require specific voltages to work.Transformers can convert the high voltage of the MAINS electricity into the low voltage required by these devices, providing them with a stable power supply.

3.Industrial production：

In industrial production lines, various equipment usually requires power supplies of different voltages to drive.The transformer can convert one voltage to another as needed to meet the operating requirements of the equipment.For example, large-scale motors, electric welding machines and other equipment need to be regulated by transformers.

4.Lighting system：

In urban and rural lighting systems, transformers are used to convert the high voltage of the MAINS electricity into different types of lamps and lighting needs.Whether it is street lighting, indoor lighting or billboard lighting, it is inseparable from the support of transformers.

5.transportation：

Transformers also play an important role in fields such as electrified railways and electric vehicle charging piles.It is used to convert the electrical energy of the MAINS electricity into a form of electrical energy suitable for the use of vehicles to meet its specific needs.