The adapter is a necessary element of the electric equipment
Any electronic device for normalThe operation requires the supply of an electric current of the specified parameters. To do this, use a special unit, known as an adapter. This device is most often supplied complete with the main electronic device. Today, let's talk about power supplies. We will consider the purpose of these devices, their characteristics and types.
Power Supply Assignment
An adapter is an electronic device that generatesoutput voltage with a specified value and power. These power supplies, designed for household electrical appliances, convert AC power to the constant current required for a particular equipment. We have adopted a standard of 220 V power supply with a frequency of 50 Hz, but in some countries these parameters are different. Accordingly, and the power supply, released for such a country, will differ in terms of input voltage. The reader can ask the question: "Why use adapters, why can not electric appliances be powered directly with 220 V?" Almost all electronic semiconductor elements have an operating voltage of 3-36 volts (sometimes there may be exceptions). This is due to the fact that components with low voltage supply have miniature overall dimensions, give off a small amount of heat during operation and have a low energy consumption. Power adapters are needed to provide such equipment with operating voltage. It is much more economical to produce a power supply for equipment than to develop a technique that is powered directly from the 220 V network. For such devices, powerful radiators will be needed that will have large overall dimensions. As a result, the price of such products will significantly increase.
Power supplies are divided into two main groups: external and integrated. An external adapter is an independent device that can go either as a bundle with an instrument or without it. Most often, such units are small in size (as an example, you can charge for a mobile phone, laptop, etc.). Integrated devices are structurally located in a single housing with the main unit. Take, for example, the power supply of a personal computer. Here the adapter is allocated to a separate node, however it is located in a common housing. You can also consider the adapter for the TV. The device in such a design can be spread over the entire board or assembled into a single unit.
According to the manufacturing technology, power supplies are dividedon transformer and electronic (impulse). Transformer adapter is a device that in its construction contains a transformer. These devices are large in size and weight, simplicity, reliability, low cost; they are easy to repair. Pulse devices also have small dimensions and low weight, they are durable and stable in operation.
USB Type Adapter
Recently, in great demandSwitching power supplies USB-type. This is due to the fact that a lot of gadgets (tablets, smartphones, etc.) can be charged via a USB cable. This became possible due to the fact that manufacturers of such electronic devices adopted a single standard of power supply - 4.7-5 volts.
Well, perhaps, that's all. In conclusion, we add that due to the high-quality adapter your equipment will receive the required supply voltage, and this, in its turn, will certainly affect the stability and duration of its operation.