Different Magnets have different permeability, different temperature characteristics. Wherein the temperature characteristic is the most important, since an energy saving lamp in operation, the magnet must be experienced at normal temperature, high temperature (up to 100 ℃), low temperature, and then work at a high temperature were constant. However, different materials have very different temperature profile, low permeability will be presented in the first half was relatively flat end, high permeability appear relatively steep; a different temperature, the variation of saturation magnetization BS will be different, it is assumed at room temperature BS 3K material is 200 dongkeng magnetic connectors, but at 100 ℃ BS value will rise to 300. The same material at room temperature 2.5K BS is 200, but in the 100 ℃, BS value was only 250. Choose turns the whole bundle cable through a ferrite bead constitutes a common mode choke, if necessary, can also be in the ring on top of the cable around a few turns. The more turns on the low-frequency interference suppression, the better liaobu magnetic connector, while the higher frequency noise suppression is weak. In practical engineering, according to the frequency characteristics of the interference current ring to adjust the number of turns. Usually when a wide-band interference signals, you can set both on the cable ring, each surrounded by a different magnetic ring turns bridge connector, which can interfere with high frequency and low frequency while suppressing interference. From the mechanism of action of the common mode choke point of view, the greater the impedance, the more obvious effects of interference suppression. The common mode choke coil impedance from the common mode inductance Lcm = jwLcm, from the formula is not difficult to see that, for a certain frequency noise, magnetic inductance bigger the better. But the reality is not the case, because there is an actual ring parasitic capacitance, and its existence is parallel with the inductor. When confronted with a high-frequency magnetic interference signal connectors, capacitors capacitance is small, the magnetic inductance short circuit, so that the common mode choke useless. Bridgehead ring connector _ Chong Xu Song Electronic Products Factory _ magnetic connector from Dongguan Shijie Xu Song Chong electronic products factory provided. Dongguan Shijie Xu Song Chong Electronic Products Factory (chuangxs.1688.com) (www.chuangxs.1688.com) is Dongguan, connectors leaders, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness policy, and satisfy customer needs. Song Chong-wook in electronic products plant leadership with the staff warmly welcome all inquiries negotiations to create electronic products factory Song Chong-wook a better future.