Power Line Common Mode Choke CM

Common Mode Chokes For Line Filter The power line common mode choke, also known as a common mode inductor, is an electronic component used to suppress Electromagnetic Interference (EMI). It is primarily utilized in power lines to reduce common mode noise propagating from the device to the power line, and also to minimize common mode noise from the power line entering the device. Common mode noise refers to voltage or current signals of the same phase that exist between the power line and the ground line. This noise is typically caused by parasitic capacitance between the power line and the ground line, which generates common mode currents when high-frequency signals pass through. The common mode choke operates by generating opposite magnetic fields in its two windings, thereby increasing impedance in the common mode path and effectively suppressing common mode noise, while having minimal impact on differential mode signals (i.e., signals between two conductors). Common mode chokes are…

Current Sensor Power Line Filter Current Transformer Shielding Inductor Communication Transformer