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RJ45 interface can be used to connect RJ-45 connectors. It is suitable for the network constructed by twisted pair. This port is the most common port, which is generally provided by Ethernet hub. The number of hubs we usually talk about is the number of RJ-45 ports. RJ45 Jack Crimping,RJ45 Jack Datasheet,RJ45 Connectors HSN Code,RJ45 Connectors 100 Pack Price ShenZhen Antenk Electronics Co,Ltd , https://www.antenksocket.com
[HC Lighting Network] Since the advent of gas discharge light sources more than 80 years ago, there is a matching ballast problem. In the subsequent development, ballasts have also appeared in the coexistence of energy-saving magnetic ballasts and electronic ballasts. . People are constantly pursuing good lighting quality and more energy-saving and environmental protection. What is the development and role of the ballast industry technology in the development of current lighting appliances? The author interviewed the electric lighting expert Ren Yuanhui, who directed The related issues of the ballast have been answered in detail.
Electric lighting expert Ren Yuanhui click here to view all news photos
Author: Your teacher, Hello, with the continuous improvement of light source lamps, the ballast will continue to develop, please make a brief introduction to the technical development process of the ballast.
Ren Yuanhui: Ballasts are constantly developing with the development of light sources. The earliest gas discharge lamps - fluorescent lamps have been produced for more than 70 years, and there are various ballasts in ballasts. In recent five or six decades, the most successful ones are magnetic ballasts. From the point of view of use, the inductance ballast has a relatively large disadvantage: First, the energy efficiency is relatively poor, such as a 36W straight tube fluorescent lamp, in addition to the light source itself, it also consumes energy, generally its power consumption is 9 ~ 10W, It accounts for about 25% to 30% of the energy consumption of a lamp tube; the energy consumption of an 18W fluorescent lamp ballast can reach 10 to 12W, accounting for 50% to 60% of the energy consumption of the lamp. Because of the power consumption of the ballast, after the occurrence of the world energy crisis in 1973, the world paid more attention to the energy consumption of the ballast. Whether it can reduce the energy consumption of the magnetic ballast has become the focus of the industry. Inductive ballast materials are inductive coils and core materials. Other principles and materials are the same as transformers. Like the continuous innovation of transformer materials and processes, the innovation of magnetic ballast materials and processes is also to reduce its own power consumption. Provides the possibility, such as a 36W fluorescent lamp, the original magnetic ballast power consumption is 9 ~ 10W, now the most efficient magnetic ballast power consumption can reach 4.5 ~ 6W, can save 3 ~ 4W, due to the number of uses Huge, its energy-saving effect is very impressive. This kind of magnetic ballast is also an energy-saving magnetic ballast or a high-efficiency magnetic ballast.
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RJ45 is a type of different connectors (for example: RJ11 is also a type of connector, but it is used on the telephone); there are two different ways to arrange the RJ-45 connector: one is white orange, orange, white green, blue, white blue, green, white brown, brown; the other is white green, green, white orange, blue, white blue, orange, white brown, brown; therefore, there are also wires with RJ45 connector There are two kinds: straight line and interleaved line.
The RJ-45 port of the hub can be directly connected to terminal devices such as computers and network printers, and can also be connected with other hub equipment and routers such as switches and hubs. It should be noted that when connecting to different devices, the jumper method of twisted pair cable used is different.
Ren Yuanhui: Looking at ballast technology with a developmental perspective
People are constantly pursuing good lighting quality and more energy-saving and environmental protection. What kind of development and role of ballast industry technology in the development of current lighting appliances? The reporter interviewed Ren Lianghui, an expert in electrical lighting.