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How to distinguish the advantages and disadvantages of switching power supplies?

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.03.27
When choosing electronic devices, we often hear a keyword - switching power supply. But how should we distinguish between the good and bad of the various switch mode power supply brands in the market? This is related to our user experience, as well as the performance and lifespan of the device. Today, let's delve deeper into how to distinguish the advantages and disadvantages of switching power supplies.



Observing appearance and manufacturing quality

The appearance and manufacturing quality of switch mode power supplies are usually the first thing we can observe. High quality switching power supplies typically use sturdy casing materials, exquisite craftsmanship, and sturdy welding. Gently touch the shell with your hand. Good switching power supplies usually use sturdy materials, which have a smooth and sturdy feel. Open the shell and observe the internal welding process. High quality switching power supplies usually use advanced welding technology, with uniform and firm welding points, and no obvious fractures or cold welding phenomena. In contrast, low-quality switching power supplies may have a rough appearance and obvious flaws. The shell feels cheap or there are scratches on the surface, which may be a sign of rough treatment during the manufacturing process.

View certification marks

A good switching power supply usually passes various certifications, such as CE certification, UL certification, etc. These certification marks not only guarantee product quality, but also mean that the power supply meets international safety standards. Be sure to pay attention to whether it comes with relevant certification marks when purchasing. Some certification marks may be accompanied by specific certification numbers. By verifying the certification number, you can confirm whether the product has indeed passed the corresponding certification process. Some products may also come with a QR code attached to the label, which can be scanned to directly connect to the certification body's database and verify the product certification status. When making a purchase, request certification documents for the product from the seller. Qualified products are usually accompanied by corresponding certification documents, including passed certification test reports, etc.

Pay attention to output parameters

The output parameters of the switching power supply, such as voltage, current, etc., should match the requirements of the equipment. The main parameters that need to be noted include: output voltage, output current, power supply, low load adjustment rate, linear adjustment rate, low ripple and noise temperature coefficient, protection function adjustment range, etc. Carefully check the power supply requirements of the equipment, choose a switch power supply that meets the requirements to avoid damage to the equipment.

Check power efficiency

Efficient switching power supplies typically provide better energy conversion efficiency, reduce energy loss, and contribute to the stable operation of equipment. You can search for energy efficiency certification, independent evaluation of energy efficiency levels, manufacturer statements, and other performance parameters of the product by checking the technical specifications and the ENERGY STAR logo, in order to better judge its quality.

Searching for user reviews

Search the Internet for user comments and experience on specific switching power supply brands. Real feedback from other users can often provide us with valuable reference opinions.

When choosing a switching power supply, carefully observing the appearance, checking the certification mark, paying attention to output parameters, checking power efficiency, and seeking user feedback are the key steps to distinguish the quality of a switching power supply. By gaining a deeper understanding of the product, we can better ensure the normal operation of the equipment and improve the user experience.
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