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how we make them...


how we make them...


Besides the importance of shielding techniques, grounding configurations and insulation materials, a cable manufacturer should equally take into account a number of parameters that will help in controlling the electrical characteristics of conductors in order to achieve optimum performance in any given application.





The optimum insulation material would be one with absolutely no response to an electric field and a complete resistance to the flow of an electric charge. Unfortunately though, there is no perfect insulator! On the other hand, there are many materials with very effective insulation properties that can easily outweigh the requirements of many electrical applications, such as the protection of cable conductors. After a thorough research on the electrical and physical properties of many insulation materials, we concluded that the optimum solution for cable conductors would be a combination of such materials. However, before we present the materials we use and the techniques we follow, it would be useful to consider the multiple uses of insulation and how it can affect some major cables characteristics.





Since the early days of radio communications, all engineers and circuit designers of the industry inevitably engaged on a battle against the unwanted effects of radiated interferences. This battle continues even in our days, where the significantly increased number of external sources of radiation, the complexity of today's electronic circuits and the increased number of connections, are causing consistent problems to the engineers of the audio and video industries.





In cable making, the term "ground" refers to the physical ending of the shield, which for some cable types, is connected on both ends, for others it is connected only on one end, and for a few other types of cables the shield is grounded directly to external points. In all cases, the grounding configuration is a determinant factor for the effectiveness of the shield and thus for the overall performance of the cable. The grounding of cables is called to play two key roles. Firstly, to create a path between the shield and the connected device in order to help discharging all unwanted signals and noises that have been intercepted by the shield, and secondly, to create directional conducting paths between the grounds of all connected devices, so as to guide ground currents to earth.