The cell phone jammer helps to protect your track privacy

Therefore, more suitable for high frequency electromagnetic shielding. Low-frequency induced current is small, the shielding effect is poor; should ensure that all parts of the shell shield electrically continuous with the good, the induced current flowing in the shell in order to generate the induced electromagnetic field is large enough to offset the external electromagnetic field, otherwise it will affect the shielding effect. The cell phone jammer helps to protect your track privacy.The so-called electromagnetic induction, that circuit and the electromagnetic coupling between the loops. When the current i1, i2 through the wires 1 and 2, respectively, if the composition of loop, then the electromagnetic coupling between each other. The so-called coupling, which flows through the conductor 2 i1 composition, flow in the conductor 1 and i2 components. 1 for on the conductor, i2 is not current, so it is only the noise component i1. Loop 1 and Loop 2 flux between will not connect, so you can complete the shield. But, in fact, rarely used anti-harassment measures into the approach to magnetic shielding. This is because the appropriate ribbon tape is more expensive high-performance reasons.The cell phone jammer helps to protect your information confidentiality. Truly effective and practical way is to avoid as much as possible the composition loops. Shielding problems discussed above, it is important to distinguish what is due to voltage or harassment originated in the current. Must be determined according to the conditions or the use of electrostatic shielding electromagnetic shielding. In the alternating field, electric and magnetic fields always exist, and then consider the electromagnetic shield to the shield, which is the electromagnetic shielding. Electromagnetic shielding and electric field shielding magnetic shielding is not a simple superposition. In the four earlier cases, the high and low frequency electric or magnetic field separately in itself is a simplified, low and high frequencies because the middle of the transition is very complex. In general, the lower frequency range, electromagnetic interference usually appear in the near field (induction field). The portable internally integrated high-volume Li battery of cell phone jammer could be used continuously for 2 hours.The near-field interference source according to the different nature of the size of electric and magnetic fields are very different. Such as high voltage low current main source of interference to the electric field interference, magnetic interference is negligible, can only consider the electric field shielding; and low-voltage high-current magnetic interference places the main source of interference, the electric field interference is negligible, then only magnetic shielding can be considered. When the frequency is high, the source of electromagnetic radiation interference increases, will produce electromagnetic radiation that the far field (radiation field). Far-field interference of the electric field interference and magnetic interference are not ignored, need to implement electric and magnetic shielding, the general practice is the use of resistivity and low magnetic permeability of the conductor are made of shield case and a good grounding. 2.3 When the source of interference to the magnetic field shielding current form, this current generated by the magnetic field near the signal through the mutual inductance coupling on the formation of interference. Suppression of such interference, effective approach is the implementation of magnetic shielding.The battery of cell phone jammer could be charged even the car hasn’t been powered on. Magnetic shielding should first be noted the high and low frequency interference sources, because the interference with different frequencies, shielding principles are different, it will involve the selection of shielding materials and shielding shell design, production and other aspects of the problem, if an analysis on the impossible to achieve interference suppression effect.