| 摘要 |
<p>PURPOSE:To leak an electrostatic charge generated at a conductive synthetic resin part through a resistance element to a supply power source circuit side each time the charge is generated and to prevent the generation of an electrostatic accident by providing an electrostatic charge preventing device connected through a conductive synthetic resin part and a resistance element to the power source input circuit of electronic equipment. CONSTITUTION:For example, a static electricity generated at conductive resin parts 4 and 6 by inserting and removing repeatedly a cassette case 3 to a computer main body 5 in an arrow direction for a long time does not flow at insulating synthetic resin parts 7a and 7b, in which the resistance value to join to this is higher, in short, a resistance r2 side. The electricity flows to a conductor (d), a jack 10b, a conductor C in a three-core connector cord 9, a resistance element R in an adapter 11, inserting fittings B, a power source input circuit 2 and an alternating current supply power source 12. A static electricity charge generated at conductive resin parts 4 and 6 leaks through a resistance element R to a power source circuit 2. As this result, the static electricity generated at the conductive resin parts 4 and 6 does not keep the high potential, and the static electricity accident such as the electric shock to a human body, the system down due to the spark discharging to an electronic circuit 5a and the generation of noise can be prevented.</p> |
