#primary_coil__primarycoil__primary_winding__primarywinding__primary  coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit; "current through the primary coil induces current in the secondary coil"
  supertype:  coil  reactor consisting of a spiral of insulated wire that introduces inductance into a circuit
  part of:  transformer  an electrical device by which alternating current of one voltage is changed to another voltage

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