Difference between desktop and wall plug power adapter

Issue Time:2007-01-20
The power adapter is divided into a wall-mounted power adapter and a desktop power adapter. The wall-mounted power adapter is also called a wall-mounted power adapter. In fact, it can be explained simply. The wall-mounted power adapter is the body that can be directly plugged into the board. The power adapter. The desktop power adapter is the power adapter that the main body needs to be placed on the desktop. The difference between the desktop power adapter and the wall plug power adapter is that the desktop power adapter needs AC line to connect with the mains.

Power adapters are widely used in security products, communication products, and small household appliances and consumer electronics. Especially in portable consumer electronics and communication products, they are generally less than 10W, such as smartphones and tablets. -10W power adapter power supply, while computer peripherals, security products, small household appliances products generally use 36W or less power adapters, especially in today's energy-saving energy conservation and environmental protection, this power segment of the product is the most common. And notebooks, TV and other products in general Use a power adapter below 120W, and more than 100W use the built-in power supply. But there are also external power adapters below 200W. But the number is relatively small..

Generally, the wall-mounted power adapter is more than 36W. The power adapter is characterized by the fact that AC wire is not needed, which saves the cost, saves space, and does not need to place the power of the countertop cargo space. It is directly inserted into the plug-in board. Safety. There are a few power adapters with a power rating of 36W or less. This is generally due to the fact that the product is far away from the AC card or because the power adapter is bulky, the quality is heavy, or the power adapter is heavily weighted. Multi-port USB power adapter, in order to avoid the use of the above plugged USB products, resulting in unstable insertion. And the power adapter larger than 36W is not suitable for wall-mounting. Because its size and weight are larger. So 36W The above is generally desktop.

In the early days, we were much more in contact with linear power supplies. For example, the repeater used in the last century. The single-player has a bulky and bulky power supply. It may also encounter embarrassing situations that fall directly from the top of the board due to unstable insertion. However, with the development of technology and increasing energy requirements, energy efficiency requirements are increasing, consumer electronics have high efficiency for power adapters, wide input voltage range requirements, and increased copper, iron and labor costs. Most of this linear transformer is gradually replaced by a switching power adapter.

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