What Are The Standards For Power Adapters?
Sep 11, 2018| To determine the quality of a power supply, first check if it has passed the necessary safety certification.
1. Generally speaking, the more power supply certifications, the more reliable the power quality. The power supplies currently sold in the market must be sold after the national mandatory 3C certification system. The existing 3C certificates have four versions: CCC (S) safety certification, CCC (SE) safety and electromagnetic compatibility certification, CCC (EMC) electromagnetic compatibility certification, CCC (F) fire certification. Among them, CCC(S) only represents the passing of safety standards.
The CCC (S&E) certification standard is being used. It puts forward two requirements for safety and electromagnetic compatibility. When you see the CCC (S&E) mark on the power supply, you can understand that it has passed the 3C certification. This is also any one. The standards that power products must meet do not mean that their quality is excellent. Some small brands will use fake signs to deceive consumers without 3C certification.
2. In addition to 3C certification, the UL certification mark will be seen on some advanced power supplies. It is one of the most stringent certifications in the world, and has restrictions on the structure, materials, test instruments and methods. . Some high quality power supplies are also FCC certified, which is a certification for electromagnetic interference. A FCC-certified power supply shields electromagnetic interference generated during operation to eliminate damage to the human body.
The quality index of the power adapter should be judged by the principle of safety and reliability. Under the condition that the electrical technical indicators meet the requirements of normal use, in order to make the power supply work safely and reliably under harsh environments and sudden failures, various protection circuits must be designed.
The power adapter market is a mixed bag. When purchasing, be sure to pay attention to whether there is safety certification, observe its quality, workmanship, etc.
Avoid buying inferior products and causing financial losses.