How Common Mode Chokes Work

How Common Mode Chokes Work

Common mode inductance choke coil is an important part of switching power supply, inverter, UPS power supply and other equipment. Its working principle: When the working current flows through two coils wound in opposite directions, two magnetic fields H1 and H2 that cancel each other are generated. At this time, the working current is mainly damped by the ohmic resistance of the coil and the negligible small leakage inductance at the working frequency. . If there is an interference signal flowing through the coil, the coil presents a high impedance, which produces a strong damping effect to attenuate the interference signal.

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