. Because the electromagnetic shielding and the shielding of the ground or not. There are only two factors that affect the shielding effectiveness of the shield: one is that the surface of the shield must be electrically conductive, and the other is a conductor that cannot penetrate the shield directly. There are many discontinuous points on the shield, and the most important one is the non conductive gap formed by the different parts of the shield. These non conducting gaps create an electromagnetic leakage, as the fluid leaks from the slot on the container. One way to solve this problem is to fill the gap with conductive elastic material to eliminate the non conducting point.
Many people do not understand the principle of electromagnetic shielding, as long as the use of metal to make a box, and then the box to the ground, it can play the role of electromagnetic shielding. Under the guidance of this concept, the result is failure
Metal shield and the shield is not accessible, otherwise it will not be shielded!The reason why the metal shield can be shielded is the outer layer of the wire mesh.
