Common Mode Choke

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a pair of red rubber rings with the words `` common mode choke '' written on them .
a picture of various rings with the words instrument current transformer core underneath
    a pair of red rubber rings with the words common mode choke above them
    a group of metal pieces with the words reactor core brazil written above them
    a transformer core suppliers in brazil advertisement with a red coil
      a bunch of different types of electrical components with the words common mode choke brazil above them
      a pair of rubber rings with the words common mode choke on the top
      a diagram of an inverter transformer core shows the inside
      two red rubber rings with the words nanocrystalline core brazil written above them