The significance and function of transformer

I. Definition
A transformer is an electrical device that can change the voltage of alternating current. It converts the input AC power into the output AC power through the principle of electromagnetic induction, and changes the voltage accordingly.
Second, the working principle
The transformer is mainly composed of two coils sealed in the iron core, namely the input coil and the output coil. Both the input coil and the output coil exist in the iron core and are connected to each other by a magnetic field. When the input coil is powered on, an alternating current is generated, which creates an alternating magnetic field in the core. Since the output coil is present in the core at the same time as the input coil, the output coil also senses this magnetic field and creates a new alternating voltage and current at the output end. The voltage is easily changed through the transformer.
Iii. Types
According to the application and working principle, transformers can be divided into many types. Common ones include isolation transformers, autotransformers, power transformers, signal transformers, etc.
4. Application field
Transformers are widely used in power system, industry, medical and other fields. In power systems, transformers are used to change the voltage of high-voltage power transmission lines in order to achieve long-distance transmission. In the industrial field, transformers are widely used in factories, lighting systems, electrical equipment and so on. In the medical field, transformers are also widely used in X-ray machines, nuclear magnetic resonance machines and other medical equipment.
In short, the transformer is a very important electrical equipment, which can convert the input AC power into the output AC power through the principle of electromagnetic induction, so as to change the voltage. Its application range is very wide, in the power system, industry, medical and other fields are used.