Patent ID: 6078242
Filing Date: 2000-06-20
Classification: H03H

Abstract:
A line filter comprising:a bobbin having a through-hole,a first coil and second coil wound around said bobbin, anda closed magnetic circuit core inserted through the through-hole of said bobbin, whereinsaid closed magnetic circuit core comprises a middle leg inserted in said through-hole and counterpart legs arranged outside of said bobbin encountering said middle leg;said bobbin is formed of piece-members which are two parallel pieces along a direction that is in parallel with the direction of said through-hole, the bobbin being formed by combining the piece-members at respective split faces, each of said piece-members having a middle flange for separating said first coil from said second coil, said middle flange comprising a hollow having an opening towards an inner surface of said piece-member, a central magnetic core made of magnetic material is provided in said hollow, and said hollow is provided with hooking means for hooking said central magnetic core.