Power supply standard
A power supply standard refers to a set of specifications and guidelines that govern the design, performance, safety, and compatibility of power supplies used in electronic devices and systems. These standards are established by various international and national organizations and industry bodies, such as the International Electrotechnical Commission (IEC) and Underwriters Laboratories (UL).
Power supply standards typically address aspects such as:
- Physical dimensions and form factors, ensuring compatibility with different device enclosures and mounting requirements.
- Electrical specifications, including voltage and current levels, power output, and efficiency.
- Safety requirements, including protection against electrical hazards, thermal management, and insulation.
- Electromagnetic compatibility (EMC), which ensures that power supplies do not cause interference with other electronic devices or systems.
- Environmental considerations, such as energy efficiency and materials used in the manufacturing process.
Some common power supply standards for various applications include:
ATX (Advanced Technology eXtended): A widely used power supply standard for desktop computers, specifying dimensions, mounting holes, connectors, and voltage values.
SFX (Small Form Factor): A power supply standard for compact systems such as small desktop computers and mini-ITX systems, similar to ATX but with smaller dimensions and specific mounting arrangements.
EPS (Entry-Level Power Supply): A power supply standard designed for servers and workstations with higher power requirements, similar to ATX but with more power connections and typically higher efficiency.
TFX (Thin Form Factor): A power supply standard for thin computer case designs and budget systems, similar to ATX and SFX but with a thinner form factor.
When selecting a power supply for a particular device or system, it is important to consider the relevant standards to ensure compatibility, safety, and performance. Power supply standards help manufacturers and consumers evaluate whether a specific power supply meets the requirements of the devices and systems and achieves energy efficiency and performance goals.
Iec and ul standard for poewr supply?
IEC (International Electrotechnical Commission) and UL (Underwriters Laboratories) are organizations that develop and establish standards for electrical, electronic, and related technologies, including power supplies. Both IEC and UL standards are important for ensuring the safety, performance, and compatibility of power supplies.
Some of the IEC and UL standards for power supplies include:
IEC 60950-1 and UL 60950-1: These are safety standards for information technology equipment, including power supplies used in such equipment. They cover aspects like electrical safety, fire hazards, mechanical hazards, and radiation hazards. UL 60950-1 is the US adoption of the IEC 60950-1 standard.
IEC 62368-1 and UL 62368-1: These standards replace IEC 60950-1 and UL 60950-1 and are safety standards for audio/video, information, and communication technology equipment. They introduce a hazard-based approach to safety and cover requirements for power supplies used in these types of equipment. UL 62368-1 is the US adoption of the IEC 62368-1 standard.
IEC 61000 series and UL 61000 series: These are standards related to electromagnetic compatibility (EMC) for electrical and electronic equipment, including power supplies. They cover various aspects of EMC, such as emission limits, immunity requirements, and testing methods. The UL 61000 series is the US adaptation of the IEC 61000 series.
IEC 60065 and UL 60065: These are safety standards for audio, video, and similar electronic apparatus, including power supplies used in such equipment. They cover requirements like protection against electric shock, fire hazards, and mechanical hazards. UL 60065 is the US adoption of the IEC 60065 standard.
When choosing a power supply, it is important to look for products that are compliant with the relevant IEC and UL standards, as this ensures a higher level of safety, reliability, and compatibility. Power supplies that meet these standards typically display the IEC or UL certification marks on the product itself or in the accompanying technical documentation.
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