Transformers are an integral part of electronics
Transformers are devices thatplay one of the most important roles in those places where electric energy is used. Their main purpose is the generation of electricity and its supply. In the event that the current is transmitted over long distances, it must be small, while the voltage is high. This allows you to significantly reduce costs. On the other hand, significant stresses require a large number of insulating materials, which leads to high costs. Transformers are devices that are used to neutralize such a contradiction. In a nutshell, they are used in power plants first to increase the voltage, and then - to reduce it. Due to this, the consumer receives the optimum current for himself.
In most cases, three-phasetransformers. This can be explained by the fact that there are three phases in electrical networks. Less often, several single devices are connected, connected by a star or a triangle. The efficiency of the current transformers reaches 99 percent. Despite this, a significant part of the power is lost due to heat. That is why they use specially designed cooling systems.
A network type transformer circuit (whichis the most common in everyday life) is built on the principle that a variety of home electrical appliances differ in varying degrees of stress. Some time ago, the main problem of these devices was a large weight and dimensions. To solve it, straighten the voltage, which is then converted into pulses with a high frequency. Further in the transformer they are led to the necessary parameters. This solution can significantly reduce the overall dimensions of the power supply. There are also pulse devices. The principle of this type of transformer is that it transmits a so-called rectangular pulse. The main purpose of this device is to transmit impulses without distortion.
The most convenient to use aredevices, as autotransformers. The primary and secondary windings in them are directly connected one to the other. Due to this, an electrical connection is also obtained between them, and not just an electromagnetic one. The winding has a minimum of three outputs. By connecting to each of them a voltage is formed with different parameters. Such devices are characterized by high efficiency, since conversion occurs only with a part of the power. At the same time, the circuits of such transformers do not have isolation, which makes them cheaper. In this regard, most often they are used for industrial purposes.
In conclusion, it should be noted that the transformersAre devices that also have a separating function. In other words, they serve to prevent a person from being electrocuted while touching a grounded element and a poorly insulated device. The fact is that if the device is switched on through this device, it becomes impossible to contact the secondary circuit with the "earth" and the electric shock.