Abstract: A ferrite component is provided for forming a ferrite bobbin about which an electric conductor is wound. The component is formed with an enlarged flange portion from which extends a shaft portion that defines a free end. The free end of the shaft portion has at least one outwardly extending projection and at least one recessed hollow which are similarly shaped and dimensioned. Two of the ferrite components are mated together to form the bobbin with the projection of one component extending into the hollow of the other component and vice versa.

Abstract: An electric noise suppressor is provided for suppressing high-frequency electric noise which comprises a thermoplastic housing and two ferrite members disposed therein. The thermoplastic housing is formed from two hingedly connected case halves, which are substantially identical. A ferrite member is secured to each case half by a laminated compressible adhesive-foam element, which is comprised of a resilient foam core layer and opposing adhesive layers disposed thereabout. Due to the resiliency of the foam core layer, the ferrite members are pressed into tight engagement within the thermoplastic housing. The end walls of the thermoplastic housing are formed with circular apertures, which are each formed with a diameter which is slightly smaller than the diameter of the cable which is engaged by the electric noise suppressor. The dimensional differences between the cable and the apertures allows the end walls to grippingly engage the cable at a predetermined location.

Abstract: Common mode ferrite bead is provided for suppressing EMI/RFI. The bead includes a ferrite body of substantially rectangular configuration with top and bottom surfaces, first and second end surfaces and first and second side surfaces. Six apertures pass entirely through the body from the first end surface to the second end surface. Grooves may be provided in bottom surface. Two conductors are provided through the body such that each of the conductors passes through each of three of the apertures through the body. The opposed ends of the conductors are bent to fit in the grooves in the bottom surface of the body. These ends of the respective conductors define contact which can be soldered to conductive pads on a circuit board.

Abstract: An electromagnetic wave absorber, having two or more magnetic layers for broadening the reduced reflectivity frequency bands, and formed of materials with staggered magnetic dispersion loss spectra. A high permeability nickel-zinc ferrite, rich in zinc, e.g., 0.7 molZn, 0.3 molNi is used as a reference absorber layer adjacent to a ground plane. The successively higher frequency spectra are related to the outer layers and the successively higher loss spectra are achieved by using higher magnetization soft ferro or ferrimagnetics, higher anisotropy semi-hard or hard ferro-ferrimagnetic material, or synthesized "smart" materials, for simulating magnetic loss dispersion. The successive layers are decoupled one from another by any of electrical, magnetic, and/or structural arrangements. The decoupling may be implemented by a significant difference in the frequencies at which the maximum values of the magnetic loss vs. frequency occurs for each layer.

Abstract: A split ferrite bead case is provided for a flat conductor cable. The case includes opposed elongated slots for a flat conductor cable to extend through so that the split ferrite bead can suppress electromagnetic interference carried by the flat conductor cable. The opposed elongated slots include cable holding means which are operative to prohibit lateral and angular shifting of the flat conductor cable in the split ferrite bead and prevent the case from sliding along the length of the flat conductor cable.