| 摘要 |
PROBLEM TO BE SOLVED: To prevent degradation of communication quality by suppressing variation of a transmission characteristic of a branch power line due to state change of a switch arranged in one-side wire line of the branch power line, in power line carrier communication using an indoor power line. SOLUTION: A switch circuit arranged in one-side wire line of a branch power line BL comprising a pair of wire lines WL1, WL2 branching from a core power line ML to supply power to a power load LD is formed with a parallel circuit of an opening-closing switch SW for switching turning-on/off of current between two terminals, and a capacitor C1 having capacitance of 1-100 nF. COPYRIGHT: (C)2011,JPO&INPIT |
