| 摘要 |
PURPOSE:To easily suppress the radiation from a cable being a dominant factor of electric field strength of a leaked radio wave radiated to the outside of the equipment by inserting a choke between a contact part of a jack and a terminal part connected to the circuit board so as to integrate the choke and the frame of the jack. CONSTITUTION:The jack 15 is a jack for connecting an equipment cord 7 or a handset cord 10. The jack 15 is provided with the contact part 16 brought into contact with pins of a plug and a terminal part 17 connected to the circuit board, and a common mode choke 14 is inserted between the terminal part 17 and the contact part 16. The contact part 16 and the terminal part 17 are assembled in the frame 18 of the jack 15 and a claw 19 is integrated with the frame 18. A cord 21 is wound onto a magnetic substance 20 to form the chock 14, one end of the cord 21 is connected to the contact part 16 and the other end is connected to the terminal part 17. In fitting the magnetic body 20 to the claw 19, then the frame 18 and the choke are integrated. Thus, the leaked radio wave from the equipment cord and the handset cord prolonged externally from the equipment is prevented. |
