| 摘要 |
PURPOSE:To perform power supply by connecting a plurality of electronic devices installed in a house to a commercial power source at only one location, and protect the electronic devices from overvoltage entering through lamp cords. CONSTITUTION:A casing 1, which constitutes the body of a device, is provided with a plug 2 for connection with a commercial power source and a plurality of plug sockets for connection of electronic devices, and the plug and a group of plug sockets 3 are connected with each other by the power lines made in the casing 1. And, a series circuit consisting of the first lighting arrestor and the first dynamic current preventive high resistance element is connected between the power lines, and also the second protective circuit consisting of the second lighting arrestor and the second dynamic current preventive high resistance element is connected in parallel, and the first lightning arrestor is connected to the earth line. |
