how to identify the real switching Power？

Article Source：   Published：2015/01/17

Switching power supply applications increasingly widespread, the market is a wide range of switching power supplies, dazzling. Faced with this situation, the consumer how to identify genuine high-quality switching power supply?
Power requirements are now recognized by 3C (China Compulsory Certification namely, China Compulsory Certification), taking into account only the strict product quality, consumer safety, health and other factors
Products according to different criteria for rigorous testing before passing through the international certification, safety certification is an important indicator of the power we buy, it should be the most important thing when we choose power.
Power selection attention to the following aspects:
   
 1, note that the appearance of power
Good power usually using a large volume of aluminum or copper heat sink, so the weight better than the poor power supply will power a lot of weight.
At the same time a high quality power supply with power lines than the inferior power transmission lines thick, so a good quality power supply with power lines are relatively crude.
    
 2, the power of the materials
If able to do so, we can turn on the power supply box closer look at the materials.
Good quality supply of materials equally well, they use more square CBB capacitance, input and output filter capacitor values are relatively large.
Meanwhile internal inductance capacitor filter circuit is also particularly large, but also within the high-quality power base will have a complete over-voltage and current limit protection components, other board printing clear, tidy wiring.
 
   Finally, talk about the errors when the optional power supply. In fact, not only is the time to buy the power, in the purchase of a lot of hardware product distributors are likely to mislead consumers
. Some dealers will tell consumers the same certified and non-certified power supply quality, it is very clear is deceiving consumers, so they buy poor quality power supply.
Power products, certification is mandatory, if not through the appropriate certification represents the manufacturers simply do not have the qualifications and ability to produce power. So try to buy brand-name products.