| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce costs and achieve generalization in an inter-device connection system capable of preventing the damage and failure of an electronic component caused by applying an overvoltage generated on a power transmission path to a device when mutually connecting the power transmission path and a reference potential point connection path between two devices in which power is thrown. <P>SOLUTION: A comparator 30 detects the generation of the overvoltage on the power transmission path composed of signal transmission lines 31A, 12A by comparing voltages inputted from one end of a transmission line 13 with a threshold voltage of a fixed voltage 1V, and by detecting the state of the reference potential point connection path composed of ground lines 31G, 12G. When the comparator 30 detects the generation of the overvoltage on the power transmission path, energization on the signal transmission line 12A is interrupted by a FET40. <P>COPYRIGHT: (C)2007,JPO&INPIT |
