construction688

    A power divider is a device that divides the energy of an input signal into two or multiple outputs of equal or unequal energy, and can also combine the energy of multiple signals into one output in reverse, which can also be called a combination. router. A certain degree of isolation should be guaranteed between the output ports of a power divider.  Power divider   is also called overcurrent divider. It is divided into active and passive. It can evenly distribute one signal into several outputs. Generally, each branch has a few dB attenuation. The signal frequency is different, and the attenuation of the divider is also different. Different, in order to compensate for the attenuation, a passive power divider is made after adding an amplifier. The technical indicators of the power divider include frequency range, withstand power, distribution loss from main circuit to branch, insertion loss between input and output, isolation between branch ports, voltage standing wave ratio of eac

  Museum-style display cases   come in a variety of styles, shapes and sizes, but which one is best for you? We take a closer look at the top 5 things to consider when buying a high-quality display case for your museum or gallery.   1. Lighting Lighting is one of the essential elements that cannot be ignored. Poorly lit displays do not inspire visitors and simply do not do justice to the artefacts. Cool, energy-efficient LED lighting should be standard in museum-quality display cases - the lower temperatures of LED lights won't damage your display objects, and they offer a lighter carbon footprint. A first-class museum-style display case manufacturer will provide excellent advice on the configuration of spot or downlighting, and help your consultant understand that what you want to achieve is critical to the lighting of your display.   2. Shape Museum style showcases  come in a variety of shapes and sizes, from tall towers and vertical showcases to mushroom, pedestal and vault show

  Obviously, if the transmission line is not properly insulated from the support of the tower or pole, then the current will flow in the direction of the ground through the tower and thus become dangerous. Of course, the transmission line is always supported by   insulators   placed on the poles. Insulators used for towers must have high mechanical strength, high resistance, and high relative permittivity, etc.   Types of insulators These are divided into different types according to their ratings, which include the following. These are used in transmission and distribution systems, where each insulator consists of several insulating discs. If one disc uses 11kv voltage, the remaining discs use 66kv voltage.   AC Standard Glass Insulator Insulators are divided into five different main types.   Post Insulator Shackle Insulator Pin insulators Strain insulators Suspension insulators   1. Post insulators Post insulators are commonly used in substations or power generation substations.   Po

  When the sun breaks through the sky, it's a great day to play golf. However, the sun can also bring harmful UV rays. You can be on the golf course for several hours per round, so  sun sleeves  are a great way to stay protected during the hot hours. Therefore, the  best sun sleeves  will provide UV protection on the course. Sun protection isn't the only thing they should give you, though. They should also keep you cool, provide plenty of flexibility, and stay in place without slipping on every swing. Great for outdoor sports For anyone who plays outdoor sports, runs, tries CrossFit for runners, etc., these may be the best choice for you due to the construction of the sleeves. The stitching of the sleeves takes into account muscle anatomy for a more comfortable, fluid sleeve that won't restrict your range of motion. Best for UV protection If you're a cyclist, many of the activities you do outdoors in the field, on the track or even on your bike will be upgraded by this

  Some cleaning professionals wonder whether it really makes a big difference whether they choose a commercial hoover over one made for residential cleaning.   After all, the machines sold by large retailers for domestic use look important and are attractively priced. But are they the best machines for commercial use?   At Outan Environmental Protection, the nation's leading commercial equipment specialist, we are committed to providing high performance equipment for a more streamlined job. To provide more information, we have broken down the top 5 reasons to use a  commercial vacuum cleaner . Industrial Vacuum Cleaner (Charge Type)   How a typical commercial cacuum cleaner works and what to look out for? A  vacuum cleaner  uses air to create a suction vortex inside the machine. Just as we draw in air through a straw, vacuum cleaners draw in air and debris through a hose or agitator. The attachable power head and brush at the end of the hoover hose help to capture dust and debris o

  Both gaskets and   O-rings   serve a similar purpose-sealing liquids or gases in a specific application. However, these two types of seals differ greatly in appearance and are designed for different environments.   When choosing a seal for your application, how do you know if a gasket or O-ring is right for you? Here are the key differences between gaskets and O-rings that you need to consider. O Ring What is an O-Ring? O-rings, also known as packing joints, are mechanical seals consisting of a round elastomeric material. They are designed to create a pressure-resistant sealing mating surface. In fact, some O-rings can withstand pressures in excess of 5,000 pounds per square inch (PSI). Even under extreme pressure, O-rings maintain their integrity while preventing liquids, gases or air from escaping the corresponding components used with them.   Although they are available in a variety of sizes, all O-rings are identical in shape. They consist of a ring-shaped elastomeric material wi