Monday, May 21, 2012

Cell phone jammer has put an end to disasters in some special industries

Electric field shielding shielding mechanism [1]: the electric field sensor as a distributed capacitance between the coupling. [Design elements]: a, shield plate to close the protected material as well, and have a good grounding shield. b, shield shape of the shielding effectiveness of the level of significant impact.    cell phone jammer      also help to reduce disasters made by cell phone using.Closed metal box is best, but works hard to do. c, shield material to a good conductor as well, but the thickness is not required, as long as there is sufficient strength can be a. 2 magnetic shielding magnetic shielding usually refers to the DC or low frequency magnetic field shielding, the effect of electric field shielding and electromagnetic shielding than to the poor more. Shielding mechanism: largely thanks to high permeability material with a low reluctance of the flux shunt plays a role, making the magnetic field inside the shield greatly diminished. [Design elements]: a, selection of high-magnetic materials such as permalloy; b, increasing the thickness of the shield; above is the reluctance to reduce the shield; c, the object will not be shielded shielding arrangement in close proximity to body position, to minimize the body through the object to be shielded flux; d, note that the structural design of the shield, where the seams, ventilation and air staff may increase the reluctance shield, thereby reducing the shielding effect. e, can be used for shielding strong magnetic field structure of double-layer magnetic shield.    cell phone jammer has put an end to disasters in some special industries.To be shielded from external magnetic field on, then use the outer shield is not easy to saturation of the material, such as silicon; and can be used within easy reach saturation of the high-magnetic materials such as permalloy, etc. Conversely, if you want to shield the internal magnetic field, then the order of the material to go over.
Manufactured in accordance with the principle of electromagnetic gasket are: conductive rubber: silicone rubber filled with 70 to 80% of total weight percentage of metal particles, such as silver, copper, aluminum, silver-plated copper, silver aluminum, silver glass ball. This material retained a good part of silicone rubber elastic properties, also has good electrical conductivity. Metal braid: beryllium copper, Monel or stainless steel wire woven into Ersi long tube, looks much like the shielded cable shield. phone jammer resumes solemn atmosphere to the meeting hall.But its weaving method and a different cable shielding, cable shielding layer is woven with multi-wire, and this shielding gasket is a line woven. Make a vivid metaphor, like the same sweater sleeve. In order to enhance the flexibility of metal mesh, and sometimes the inclusion of rubber in the network core. Finger reed: reed made of beryllium copper, has good flexibility and conductivity. Conductivity and flexibility. Multiple conductive rubber: the rubber composition by the two layers, inner layer is a common silicone rubber, the outer layer is conductive rubber. This material is flexible to overcome the traditional shortcomings of poor conductive rubber, the rubber elasticity can be fully reflected.   cell phone jammer      can resume normal activities that were disturbed by cell phone signals. It works somewhat like a metal mesh with a rubber core section. Choose what type of magnetic sealing gasket to consider four factors: shielding effectiveness requirements, the availability of environmental sealing requirements, installation of structural requirements, cost requirements. Comparison of different characteristics of the cushioning material, such as the table below. Shielding mechanism can be divided by the electric field shielding, magnetic shielding and electromagnetic shielding.

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