Tag Archive: devices

There are two main methods of connecting optical fibers: Welding and mechanical connection. Optical welding. For welding optical fibers are used welders. In our company, the equipment world's leading manufacturers: Fujikura (Japan), Sumitomo (Japan), Furukawa (Japan), Corning (USA), Jilong (China). Detailed information about them can be found in the relevant sections of the site splicers.ru. In optical welding machines will connect with electrical discharge (arc welding). This operation can be performed either automatically or manually. Before bonding the optical fiber must be prepared.

To begin, remove the protective cover from the fiber. For this purpose special tools. Then, the fiber must be cleaned from the remnants of the gel. After that produce spalling. Cleavage is necessary to butt welded optical fiber was completely smooth. Cleavage produces a special device that is called – Fiber Optic Cleaver. There are lots of instruments of this kind. Cleaved and free from dust and fat with alcohol wipes optical fiber is placed in a welding machine.

And by welding fibers in accordance with the selected mode. Typical welding machine consists of two clamps, which fit into the fiber, and two electrodes, between which the arcing. Properly stowed and align fibers to each other helps built microscope and a screen that displays the welding process. Machines with arc discharge permit to weld up to 24 ribbon fibers simultaneously. Most modern machines for welding optical fibers have automatic modes with the ability to custom programming, which greatly facilitates the process of welding. Built-in computer allows you to align the fibers with high accuracy and to choose the right power level that allows us to achieve high-quality connections with no damping more than 0,02 dB. Sovremennnye optical welding allow you to make a given attenuation of the line. Losses up to 10dB can be programmed during welding. Mechanical connectors. Mechanical connectors can do without welding equipment. The loss of their use are between 0,5 dB to 0,75 dB. Most often used in the budget lines, or as a temporary replacement weld. Brief summary. Thus, owing to their compactness, multi-functional, high quality connections for welding optical fibers are now indispensable tools for installation and maintenance of fiber optic.

One of the most important details of the cellular phone is its battery. All know how to use battery charger for mobile phone, but not many know how to do it. When we have drained the battery, we connect the charger and charge up to readiness. However, at one point, begin to notice that the time of fully charged battery is smaller than it was before. So. Let's start with the nickel-cadmium (NiCd) and nickel-metal hydride (NiMH) batteries. Everyone knows that at the end of the battery in the normal charger green light to indicate that the battery is fully charged and ready to go work. If the battery is charging the phone, then the latter will inform you about his usual manner.

As a result, you believe that your battery is charged, has full capacity and could trust him at 100%. But such data can not be trusted! "Green Light" conventional charger does not guarantee sufficient (nominal) capacity and serviceability of the battery. The whole point is that the usual charger charges (fills) battery electric power only as long as there are so-called "free space", while the amount of injected energy into the battery can not be estimated! This suggests a simple analogy with the glass, which we examined in detail when discussing the electrical capacity of the battery in the article. If the empty glass can be poured into 200 ml of water, in the same glass, but partially filled, such as sand or small stones – a much less.