The electromagnetic compatibility (EMC) of the switching power supply means that the switching dc power supply, power adapter or power transformer does not reduce its performance indicators due to electromagnetic interference under the specified electromagnetic environment level, and the electromagnetic radiation generated by them is not greater than the specified limit voltage. It does not affect the normal operation of other electronic equipment or systems, and achieves the purpose of non-interference between led power supply 12v 5a and equipment, switching power supply and system, and reliable work together. With the increasingly stringent international electromagnetic compatibility regulations, the electromagnetic compatibility of led flood light power supply and other electronic products has received more and more attention.

1)Switching power adapters, chargers, power transformers or electronic equipment, systems should have the ability to resist certain electromagnetic interference. It will not be subject to the electromagnetic interference emitted by other electronic devices or electronic systems in the same electromagnetic environment, resulting in an impermissible performance degradation.

2)high power supply, adapters, chargers, transformers or electronic equipment, systems do not generate electromagnetic interference exceeding the specified limits.

At present, more and more countries have used electromagnetic compatibility standards as the basis for evaluating the performance of high power supply, chargers, power transformers or electronic products. With the high-speed and digitalization of electrical and electronic equipment, especially since the European Union began to enforce electromagnetic compatibility standards in January 1996 in accordance with the 89/336EEC directive, there has been a worldwide impact on switching power supplies, chargers, transformers, and electrical and electronic products. The upsurge of EMC research.