Wall And Desktop Power Adapter

Power adapter is divided into wall adapter and desktop adapter, Plug in wall power adapter is also known as wall mounted power adapter. In fact, it can be explained simply. Plug in wall power adapter is the power adapter that can be directly inserted into the plug-in board. Desktop power adapter is the power adapter that the body needs to be placed on the desktop, Desktop power adapter needs AC cable to connect with mains.

Power adapter is widely used in security products, communication products, small household appliances and consumer electronic products, especially in portable consumer electronic and communication products, which are generally less than 10W. For example, smart phones and tablet computers generally use 5-10W power adapter for power supply, while computer peripheral, security products, Small household appliances generally use less than 36W power adapter, especially in today's energy shortage, advocating energy conservation and environmental protection, this power range of products is the most common. Notebook, TV and other products generally use less than 120W power adapter, and more than 100W use internal power supply. But there are also less than 200W use external power adapter. But the number is relatively small.

Generally, the wall plug-in power adapter is used below 36W. The characteristic of this kind of power adapter is that it doesn't need AC wire, so it saves cost and space. It doesn't need to put the table space of power supply. It's also safer to plug it directly into the plug-in board. A few power adapters below 36W are desktop type, This is generally due to the fact that the product is far away from the AC board, or because the power adapter is bulky and heavy, or the hanging weight on the power adapter is heavy, In order to avoid unstable plug-in caused by too many USB products plugged in above, the power adapter larger than 36W is not suitable to be made into wall type. Because of its large volume and weight, desktop type is generally used for the power adapter above 36W.

With the development of science and technology, as well as the increasing shortage of energy, they have higher and higher requirements for energy efficiency. Consumer electronic products have high efficiency for power adapter, With the requirement of wide input voltage range and the increase of copper, iron and labor cost, linear transformers are gradually replaced by switching power supply adapters.