The introduction of electric wire and cable

Wires and cables used to transmit electric (magnetic) energy, information and realize electromagnetic energy conversion of wire products, wire and cable generalized also referred to as the cable, special cable refers to insulated cable, it can be defined as: aggregate is composed of the following parts; one or a plurality of insulated wire core, and their respective may have the coating layer, the total protective layer and the outer protective layer, the vga cable can also have additional no insulation of conductor. For the transmission of electric (magnetic) energy, information and realize electromagnetic energy conversion of wire products.
General electric wire and cat6 patch panel is also referred to as the cable, special cable refers to insulated cable. It can be defined as, aggregate is composed of the following parts: one or a plurality of insulated wire core, and their respective may have a coating layer, the total protective layer and the outer protective layer, the cable can also have additional no insulation of conductor. The main features of products: pure metal conductor, no insulation and sheath layer, such as steel core aluminum stranded wire, copper bus, electric locomotive line; processing technology is the pressure processing, such as melting, rolling, drawing, stranding / pressing twist; products are mainly used in suburban, rural, user the main line, switch cabinet etc..

How to use the vga cable?

 VGA connector is the output of the analog signal on the graphics interface, VGA (Video Graphics Array) port, also called D-Sub connector. Although the LCD monitor can receive digital signals directly, but many low-end products in order to match with vga extension cable  which uses the VGA connector. VGA interface is a D-type interface, there are above 15-pin space, divided into three rows, each row of five.vga cable interface is the most widely used type of
 Most computer with an external display is through analog VGA interface display image information, the computer digitally generated internally between devices is changing the video card in a digital / analog converter for the R, G, B three primary signals and lines, field sync signal, the signal is transmitted to the display device via a cable. For analog display device, such as an analog CRT display, the signal is sent directly to the appropriate processing circuitry, the drive control tube to generate an image. As for LCD, dvi cable and other digital  display devices, display devices need to configure the A / D (analog? Digital) converter, the analog signal into a digital signal. After a D / A conversion and A/D2, inevitably result in some loss of image detail. VGA interface used in CRT monitors is understandable, but the loss of connection for image display devices like LCD, the conversion process will display a slight decline.interface, the vast majority of graphics cards with such an interface.

Specifications of wire and cable

The main features of the products are: different specifications, a wide range of applications, the use of voltage 1kV and below more special occasions, in the face ofconstant derived from the new products, such as refractory cable, flame-retardantcable, low smoke zero halogen / low smoke and low halogen cable, anti termite, antimouse cable, oil resistant / cold / temperature / wear cable, medical / agricultural /mining cable, thin wire etc.. With the rapid development of communication industry,from the past simple telephone and telegraph cable development to thousands of words on the cable, coaxial cable, optical cable, data cable, or even combinedcommunication scart splitter cable etc.. This kind of product structure is usually small and uniformsize, high precision manufacturing. Winding wires is a conductive metal wire insulation layer, is used for winding coil or winding of electrical products. Workthrough an electric current produces a magnetic field, or cutting magnetic line of forceto generate induction current, realize the transformation of electricity and magnetism,so it become the electromagnetic wire. Wire and cat6 cable products is the vast majority ofsection (cross-sectional) have identical shapes (ignoring the error caused by themanufacture), is a long strip shape products, this is because in the system or deviceis composed of lines or coil and used as the feature of the decision. So the study ofstructural analysis of the cable product composition, only need to observe and analyze from its cross section.

Structural element of wire and cable products, generally can be divided into wire, an insulating layer, the shielding and protecting layer of the four main structuralcomponents and the filling element and a carrier element etc.. According to the service requirements of products and applications, some products structure is very simple.

WISDOM terminal block What does it mean YJV cable

YJV full name XLPE insulated cable , PVC sheathed power cable , suitable for indoors, cable trench , pipeline , tunnel , etc., mainly used for the transmission of electricity is one of the most commonly used types of power cables . YJV cable wires and cables are used , we usually see the majority of the black cable sheath YJV cable , power crossover ethernet cable supply main use is basically YJV cable , YJV cables are civil , general-purpose cable wires and cables belonging to the low-end market . YJV main cable cores 2 cores , 3 core, 4 core , 5-pin , 3 +1,3 +2,4 +1 , prefab branch cables , etc. The main specifications of a square to 240 square feet ( can be customized separately ) . For the transmission and distribution of electricity cables. Commonly used in the urban underground power grid , power plants leads to lines, internal power supply and the mining industry across the river , over the sea underwater power line . In power lines , cables proportion is gradually increased. Power cable is used to transmit and distribute electricity power cable products in the main power system in line , including 1-500KV and above various voltage levels , a variety of insulated power cable.Power cables (power cable), long-term , safe and reliable transfer of large capacity electric insulating power called " power cable ." Outsourcing conductor power cable with high dielectric material and a protective layer of various cables . Its main functions and overhead wires , as in electricity transmission and distribution system, large pcb spring terminal blockcapacity energy use . The difference between the overhead line is the power cable can be laid in a variety of environments , covert security , climate change, free from outside interference ; well be less maintenance and durable. But the structure of the power cable is more complex, multi- manufacturing processes , product prices several times higher than the overhead wires ; therefore not suited to the use of overhead lines generally used the occasion . With the rapid increase in the level of China's economy , the proportion of power cables in power systems is increasing. Such as medium and low voltage overhead lines of urban areas will be gradually replaced by concealed cable lines , suburban and urban centers will use overhead insulated cables.

WISDOM terminal block from the initial progress of Ethernet technology in Xerox Palo Alto Research Center, one of the

Initially progress Ethernet technology pioneer technology projects from many Xerox Palo Alto Research Center in one. People often hdmi to dvi adapter think that Ethernet was invented in 1973, when Robert Metcalfe (Robert Metcalfe) PARC to his boss wrote a memo about Ethernet potential. But I think Metcalfe Ethernet only appeared after a few years. In 1976, Metcalfe and his assistant David Boggs published an article entitled "Ethernet: Distributed local computer network packet switching technology," the article.micro usb connector End of 1977, Metcalf and his collaborators received a "collision detection with multi-point data communications system" patent. Multi-point transmission system is called CSMA / CD (Carrier with Collision Detection Sense Multiple Access), from logo Ethernet birth.