There are differences between the Chinese standard and American standard for power adapters in terms of plug shape, voltage and current specifications, certification standards, etc. The following is a detailed comparison:
- Plug shape
Chinese standard plug: usually a two pin flat or eight shaped three pin plug (including grounding), in accordance with Chinese national standards (GB).
American standard plug: usually a two pin flat type (without grounding) or a round two pin flat three pin plug (with grounding), in compliance with the National Standard of the United States (NEMA).
2. Voltage and current specifications
Medium sized power adapter:
Input voltage: 100-240V AC (wide voltage design, compatible with most regions around the world).
Output voltage: commonly 5V, 9V, 12V, 15V, 20V, etc., suitable for mobile phones, laptops and other devices.
Current: According to equipment requirements, such as 2A, 3A, 5A, etc.
US standard power adapter:
Input voltage: typically 100-120V AC (US standard voltage).
Output voltage and current: Similar to standard specifications, but must comply with energy efficiency standards such as Energy Star in the United States.
3. Certification standards
China Standard: CCC certification (China Compulsory Certification) is required to ensure compliance with Chinese safety and electromagnetic compatibility standards.
US regulations: UL certification (Underwriters Laboratories certification) or FCC certification (Federal Communications Commission certification) is required to ensure compliance with US safety and electromagnetic compatibility standards.
