Plug-and-jack type transmission devices and plug-jack type photoelectric transmission devices

摘要

A plug-and-jack type transmission device comprises: at least seven electrical terminals for connecting a mini-single-head electrical plug to a transmission device to exchange electrical signals with the mini-single-head electrical plug; A retaining body for receiving and supporting the electrical terminal and for receiving the mini-single head electrical plug; And a switch element for completing the electrical connection between the fourth electrical terminal and the sixth electrical terminal when the mini single head electrical plug is inserted into the retaining body. The mini single head electrical plug includes at least seven zones. And the region farthest from the plug tip electrode corresponds to the first region. When the mini-single-head electric plug is inserted, the first electrical terminal is brought into contact with the first region, the second electrical terminal is brought into contact with the seventh region, and the third electrical terminal is brought into contact with the fifth region The fourth electrical terminal is brought into contact with the third region, the fifth electrical terminal is brought into contact with the third region, and the seventh electrical terminal is brought into contact with the first region. The first, fourth, and fifth electrical terminals are coupled to the power source through respective resistors, and the sixth and seventh electrical terminals are grounded.