1076/2010 - Article (so-called ‘common mode choke’) with dimensions of approximately 3 × 3 × 2 cm (including the base plate), consisting of two coils of insulated copper wire wound on a circular ferrite core, with a ratio of 1:1. The differential mode current (signal), flowing in opposite directions through the coils, creates equal and opposite magnetic fields which cancel each other out. This results in the article presenting zero impedance to the differential mode current, which passes through unaltered. - The Trade Hub