Abstract: The present invention provides a new and innovative technique for attaining satisfactory attenuation characteristics. The present invention provides a wound coil made by winding a conductive wire (2) around a core (3), wherein the core (3) is shaped having a tapered part (11) in which the outside diameter of the core (3) gradually decreases so that the diameter of the conductive wire (2) wound around the core (3) is not constant but instead gradually decreases; and the tapered part (11) is not tapered so that the outside diameter of the core (3) decreases at a constant rate from a large proximal end to a small distal end of the tapered part (11), but rather the tapered part (11) is formed into a tapered shape wherein the rate of decrease in the outside diameter of the core (3) is gradually reduced from the large proximal end to the small distal end; i.e.

Abstract: There is provided a highly innovative and exceptionally useful technique for enabling an excellent and hitherto unavailable electromagnetic wave absorbing action to be produced for preventing electromagnetic noise in a highly effective manner. An electromagnetic wave absorbing material is obtained by mixing a magnetic mixture (1) with a resin (2), wherein the mixture (1) is configured by forming a magnetic material (3) into a hollow shape (3a) having a hollow part (3a), and providing a dielectric material (4) to the hollow part (3a) of the magnetic material (3).

Abstract: A shaped product having a shape corresponding to a flare-like deflection yoke core is formed from clay as a raw material of ferrite by a wet molding method; parting grooves are formed in the inner or outer circumferential surface of the shape product while it is green; and the thus obtained shaped product is dried and calcined, whereby a deflection yoke core is produced.