Thursday, January 12, 2012
The installing position of cell phone blocker
In summary, electrostatic shielding, static magnetic shielding, electromagnetic shielding of the physical content, physical condition, the shielding effect is different, the materials used and also from specific conditions, but they are shielded electromagnetic fields, there is a nature of contact. the basic concepts of the so-called soft magnetic materials, soft magnetic materials, specifically those that coercive force is small, easy magnetization and demagnetization of the magnetic material so-called soft, that these materials easy magnetization in the magnetic performance on "soft."People could customize cell phone jammer with any kind of frequency according to their requirements. Soft material very versatile because they are easy magnetization and demagnetization, and has a high permeability, can play a good role in the aggregation of magnetic field lines, so the soft magnetic materials are widely used as magnetic field lines of the path, that is used as a magnetic materials, such as transformers, the sensor core, the magnetic shield, a special magnetic circuit yoke, etc. Here are a few commonly used are made of soft magnetic materials and the use of common components. commonly used soft magnetic materials: silicon steel: silicon is about 3% silicon content, the other major iron silicon alloy. silicon steel is used extensively for low-frequency transformer and motor cores, especially the frequency transformer. The cell phone jammer company could also produce original equipment products.silicon is characterized by a soft magnetic material used in the highest saturation magnetic flux density (2.0T and above), so when used as a transformer core can work in a high operating point (such as work magnetic induction value 1.5T). However, silicon steel in soft magnetic materials commonly used in the iron loss is also the largest, in order to prevent the core due to heat loss is too large, it is not high frequency of use, generally only work in the 20KHz below silicon steel sheet is usually thin, which is in the manufacture of transformer core to reduce the core of the eddy current losses when the present hot-rolled and cold-rolled silicon steel sheet is divided into two major categories of so-called hot-rolled silicon steel, is the silicon steel slab in the rolling heated above 850 degrees, then the annealing temperature as high rolling,What follows is the method to find out the installing position of cell phone blocker both in large space and small space. the rolling out of the silicon are isotropic, meaning that the magnetic properties of silicon steel in all directions the same as the isotropic non-oriented silicon steel, also known as silicon. non-oriented silicon steel widely used in the motor stator or rotor, because to create electrical stator and rotor, it is necessary in large stamping out round on silicon parts then always want the same silicon along the circumferential direction of the magnetic, so use the non-oriented silicon steel. In order to obtain better magnetic properties, then people invented cold-rolled silicon steel sheet, that is rolling at lower temperatures,The mains and antenna are attached to the cell phone jammer machine. then annealed cold-rolled silicon steel sheet orientation is one of the representative cold-rolled silicon steel sheet orientation on the slab for the first cold, so have many structural defects inside the material in the subsequent annealing process, the occurrence of structural changes in materials (called recrystallization), this change will make silicon magnetic properties in a direction very well, that is the direction of the magnetic properties and therefore is called oriented silicon steel In the final use, so that the core along magnetic field lines through the best direction, so that we can maximize the potential of the magnetic properties of silicon steel for example, in the transformer.
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