Good price wall mount AC adapter with 98% high efficiency, input ripple ≤80mV, 5.5*2.5mm (compatible 5.5*2.1mm) DC port size and fireproof plastic enclosure shell. 

Specification

Dimension (mm)

Tips: How to Solve the Electromagnetic Compatibility of AC Wall Adapter?

Enhance the anti-interference ability of the interfered body. The input and output of the power adapter are also the conduction lines of the interference source and the pick-up source for receiving radio frequency interference signals. We generally need to take effective measures when designing, using the necessary common mode and Differential mode suppression circuit, at the same time, certain filtering and anti-electromagnetic shielding measures must be taken to reduce the entry of interference, and various isolation measures shall be taken as far as possible when conditions permit, so as to block the propagation of interference. And lightning protection circuit is also an important part of it. Commonly used lightning protection devices include gas discharge tubes, TVS, etc.
Simply put, any electronic device or electronic system does not affect other nearby electronic devices due to its own parasitic occurrence or electromagnetic leakage, or electronic interference with the normal operation of the system or the formation of electronic pollution, and at the same time, it can remain normal under certain working conditions. Work, it is considered to have electromagnetic compatibility. Electromagnetic compatibility is the most basic standard that any electronic product needs to meet, and it is the most basic guarantee for the user by the manufacturer.