General filter

Application Number  00128777 Application Date  2000.09.20
Publication Number  1289179 Publication Date  2001.03.28
Priority Information   1999/9/20 JP 266239/99  
International
Classification
 H01F27/00;H03H1/00  
Applicant(s) Name  TDK Corp.  
Address    
Inventor(s) Name  Sato Takateru;Saito Katsumi;Kuroshima Toshiko  
Patent Agency Code  72001 Patent Agent  zhou beilin
AbstractA common mode filter includes a drum-shaped core 1 with a winding 2 and a plate-like core fixed to flanges 1b to form a closed magnetic path. Concave portions 4a are formed in at least one of facing potions of both cores to provide gaps between the flanges 1b of the drum-shaped core and the plate-like core 4. A plurality of electrodes 3 each of which is successive over a upper surface, end face and lower surface of each flange are provided at portions corresponding to the gaps in each flange 1b. A plurality of windings 2 are wound around the winding core 1a so that both ends of each of the plurality of windings are electrically connected and secured to the portions of the electrodes on the upper surface of each of the flanges, respectively, by conductive fixing agent. The drum-shaped core 1 and the plate-like core 4 are fixed to each other by an adhesive 5.