| 摘要 |
PURPOSE:To obtain a highly reliable power line carrier control system by connecting a block filter to a connection to which a conventional household electric appliance not controlled by a carrier control signal to use an existing indoor power line. CONSTITUTION:The power line from the outdoor is given to the indoor as an indoor power line l6 via a main circuit breaker 1 and a block filter BF blocking a carrier control signal. A power line l0 is branched to indoor power lines l1, l2... by plural branch breakers 2. A power receptacle for a general household electric appliance not controlled by the carrier control signal is provided to the power line l1 via the BF blocking the carrier control signal and a control receptacle 32 not through the BF is provided. The carrier control signal is used exclusively by connecting the carrier control signal transmitter to the receptacle 32 and the control signal receiver to the receptacle 3b of the power line l2 to obtain the power line carrier control system with high reliability. |
