Input Voltage of Switch Power Adapters

　　The input voltage of a switch power adapter is the AC voltage that it is designed to accept from the mains power supply. Different regions around the world have different standard mains voltages, such as 110 - 120V in North America and 220 - 240V in most of Europe, Asia, and Africa. Switch power adapters are manufactured to be compatible with specific input voltage ranges.

　　Some adapters are designed for a single - voltage input, meaning they are only suitable for use in regions with a particular mains voltage. For example, a power adapter marked for 110V input is intended for use in areas like the United States. Using such an adapter with a 220V supply would likely cause it to malfunction or even be damaged.

　　On the other hand, there are universal input voltage adapters. These are designed to accept a wide range of input voltages, typically from 100V to 240V. They use advanced switching technology and voltage regulation circuits to automatically adjust to the input voltage. Universal adapters are highly convenient for travelers or for devices that may be used in different regions. For instance, a laptop power adapter with universal input can be used in both the United Kingdom and Japan without the need for a voltage converter.

　　The input voltage range of a switch power adapter is clearly marked on its body. It is extremely important for users to ensure that the adapter's input voltage rating matches the local mains voltage. Incorrect connection of the input voltage can not only lead to adapter failure but also pose a safety risk, such as electric shock or fire.

Read recommendations:

36W desk Switching power supply

12V0.6A European standard wall plug

LED Power Supply 350W

Are the Material Requirements for Power Adapters High?

Power Adapter Troubleshooting