The popularization of cable products with extensive computer technology

In the mid-19th century, the world's * electronic digital computersYuFebruary 15, 1946in the U.S.University of PennsylvaniaFormally put into operation, its name isENIAC(Eniak), yesElectronic numerical integration computerThe abbreviation for "The Electronic Numeric Interlator and Computer". More and more wealthy people have started the widespread use of computers,

among whichA computer, commonly known as a computer, is an electronic computing machine used for high-speed calculations. It can perform numerical calculations, logical calculations, and also has storage and memory functions. It is a modern intelligent electronic device that can automatically and rapidly process massive amounts of data by running programs. A computer composed of hardware and software systems without any software installed is called a bare metal computer. It can be divided into five categories: supercomputers, industrial control computers, network computers, personal computers, and embedded computers. The more advanced computers include biological computers, photon computers, quantum computers, etc.

Due to our industry's understanding of computers and inspiration from computer cables, the popularization of computer products is the popularization of our cable industry. Our products are designed for the development and research of computers,Computer cables belong to electrical equipment cables, and this cable is suitable for electronic computers and automation instruments with high anti-interference requirements for rated voltage of 500V and below. According to different environmental and equipment usage requirements, cable insulation can be made of polyethylenepolyvinyl chloride、cross-linked polyethylene、fluoroplastic、silicone rubberWaiting for materials.

The cores of the cable, as well as between the cores and the shielding or other metal layers, should withstand a 50Hz AC voltage of 2000V/1min or 1500V/5min without breakdown.

Polyethylene has high insulation resistance, good voltage resistance, low dielectric constant, and minimal temperature and frequency effects on dielectric loss. It not only meets the requirements of transmission performance, but also ensures the service life of cables.

In order to reduce mutual crosstalk and external interference between circuits, cables need to adopt shielding structures. Shielding materials include tin plated or non tin plated copper wire, copper tape, copper plastic composite tape, aluminum-plastic composite tape, etc. The metal tape is produced by winding, and the overlap rate should usually not be less than 15%, but specific standards have special provisions, such as TICW/06, which stipulates that the overlap rate of shielding metal tape should not be less than 25%; The metal wire is produced by weaving, and the weaving coverage rate should not be less than 80%. If there are high requirements for anti-interference, the coverage rate can be no less than 90%.

The shielding requirements for cables are adopted according to different occasions: sub shielding (only the twisted pair group has shielding, each twisted pair group has shielding), total shielding (the cable only has one layer of total shielding after the cable core is formed), sub shielding+total shielding (including both structures mentioned above). According to the higher requirements of users and usage scenarios, the overall shielding structure can adopt a composite shielding method, which includes two layers of shielding, consisting of metal tape wrapping and metal wire weaving.

Beijing Guangtong Optical Fiber Cable * Cable Products: