Reduction of coupled voltage of electric cable with electro-static countermeasure

The failure by an electric noise caused by Electrostatic discharge (ESD) is one of the most important causes of reliability problems. It is important to reduce the fluctuation in a voltage of power supply for electric equipment. The metal covered cable is used to reduce an electric noise. It is effective on a shield of the electromagnetic wave because of the low electric resistance on the surface of this cable. However, it is dangerous when a fluctuation of a voltage occurs due to the electrostatic discharge from the electric charged metal. On the other hand, the insulation covered cable is generally used. It is also dangerous when the electrostatic discharge is generated by a tribo-charge to cause a fluctuation in a voltage. In this paper, the dissipative material covered cable was studied to reduce the fluctuation in a voltage.