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  Common mode chokes (CMCs) are essential passive electronic components designed to suppress electromagnetic interference (EMI) while allowing desired signals to pass through electronic circuits. As electronic devices become more compact, interconnected, and power-dense, controlling electrical noise has become increasingly important. Common mode chokes play a critical role in ensuring electromagnetic compatibility (EMC), improving signal integrity, and protecting sensitive electronic systems from unwanted interference. A common mode choke consists of two or more windings wound on a shared magnetic core. When common mode noise flows through both conductors in the same direction, the magnetic fields reinforce each other, creating high impedance that effectively blocks the unwanted noise. Conversely, differential signals flowing in opposite directions generate opposing magnetic fields that largely cancel out, allowing useful signals to pass with minimal attenuation. This unique oper...