TRANSFORMER

摘要

PURPOSE: A transformer is provided to easily secure an insulation distance between a primary coil and a secondary coil by protruding an external bobbin terminal of an inner bobbin and an external connection terminal of an outer bobbin in an opposite direction. CONSTITUTION: A bobbin unit(10) includes at least one inner bobbin(20) and an outer bobbin(30). The inner bobbin includes a body unit, a flange unit, and an external connection terminal. A terminal coupling unit is formed on one side of a lower flange unit of the inner bobbin. A core(40) is inserted into the penetration hole of the bobbin and forms a magnetic path. A coil unit(50) includes coils wound around the plurality of bobbins.