Absorption interference EMI absorption ring absorption ring / bead is characterized by its impedance characteristics of. At low frequencies exhibit a very low inductive impedance value does not affect the transmission of data or signal lines useful signal. At high frequencies, is about 10MHz started impedance increases, the inductive component remains small, resistive weight has increased rapidly, the high frequency EMI interference absorb energy in the form of heat dissipation. Typically 25MHz and 100MHz frequency resistance values ??at two key points to calibrate the absorption characteristics of EMI absorption magnetic ring / beads. Turns select the whole bundle cable through a ferrite bead constitutes a common mode choke Dasan connector contacts election Which Dasan connector needed to be in the ring on top of the cable around a few turns . The more turns, the lower frequency interference suppression, the better, the higher frequency noise while weak inhibition. In the actual project, according to the characteristics of the interference current frequency magnetic ring to adjust the number of turns. Usually when wide-band interference signals, you can set both on the cable ring, each magnetic surround different turns, so you can simultaneously suppress high frequency interference and low-frequency interference. Mechanism of action from the point of view of the common mode choke coil, the greater the impedance, the more obvious the effect of interference suppression. The common mode choke coil impedance from the common mode inductance Lcm = jwLcm, not difficult to see from the formula, the noise of a certain frequency, magnetic inductance bigger the better. But the reality is not so Dasan connector, because the actual ring also parasitic capacitance, and its existence is parallel with the inductor. When faced with the high frequency noise Dasan connector Which cost-effective, small capacitance capacitors, magnetic inductance short circuit, so that the common mode choke useless. Which connector affordable Dasan Dasan connectors, electronic products factory Song Chong-wook from the Dongguan Shijie Xu Song Chong electronic products factory provided. Dongguan Shijie Xu Chong-electronic products plant (chuangxs.1688.com) (www.chuangxs.1688.com) strong, credible, connectors, and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xu Song Chong electronic products factory into the brilliant and you work for a better future!