| 摘要 |
PURPOSE:To eliminate high frequency components in noise by storing wires constituting a cable in a plug while passing them through the through hole of a magnetic core with absorbs noise of higher than a specified frequency. CONSTITUTION:A magnetic core 11 stored in a plug 2 is made by a ring-shaped magnetic substance such as a Mn-Zn ferrite having attenuation characteristic for high frequencies higher than 100MHz. A through hole 12 for inserting wires 6 is provided at the center portion of the core 11. The core 11 is flat with its height smaller than its outside diameter and is stored in the flat plug 2 in such a manner that its end face 13 is parallel to the extension line of a cable 1. Wires 6 coming out of the end of the cable 1 passes through the through hole 12 from one side of the core 11 and are connected to a contact 3 from the opposite side. While the cable is in use, high-frequency noise higher than 100MHz and high frequency components in impulse noise passing through the wires 6 are absorbed and eliminated by the high-frequency loss of the core 11. |
