The Applications of Rotary Screw Compressors

       The gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Similar to pumps, gas compressor increases the pressure on a fluid and transports the fluid through a pipe. The rotary screw compressors are the type of gas compressor which uses a rotary type positive displacement mechanism. They are commonly used to replace piston compressors where large volumes of high pressure air are needed, either for large industrial applications or to operate high-power air tools such as jackhammers.
       Basically, the screw compressors are used to supply compressed air for general industrial applications. Trailer mounted diesel powered units are often seen at construction sites, and are used to power air operated construction machinery.
       For Oil-free compressor, the air is compressed entirely through the action of the screws, without the assistance of an oil seal. They are used in applications where entrained oil carry-over is not acceptable, such as medical research and semiconductor manufacturing.
       In an Oil-flooded rotary screw compressor, oil is injected into the compression cavities to aid sealing and provide cooling sink for the gas charge. It is usual for some entrained compressor oil to carry over into the compressed gas stream downstream of the compressor. In many applications, this is rectified by coalescer/filter vessels.

What is RF Transistor?

<p>&nbsp; &nbsp; &nbsp; <strong><a href="http://www.upteks-components.com/01-rf-transistor.html" target="_self">RF transistor</a></strong> is a&nbsp;semiconductor&nbsp;device&nbsp;used to&nbsp;amplify&nbsp;and switch&nbsp;electronic&nbsp;signals. It is made of a solid piece of semiconductor material, with at least three terminals for connection to an external circuit. <a href="http://www.upteks-components" target="_self">RF transistor</a>&nbsp;is a variety of transistors, which is differ from other transistor in its maximum operating frequency. A voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals. Because the controlled (output)&nbsp;power&nbsp;can be much more than the controlling (input) power, the transistor provides&nbsp;amplification&nbsp;of a signal. Today, some transistors are packaged individually, but many more are found embedded in&nbsp;integrated circuits.</p>

<p>&nbsp; &nbsp; &nbsp; The transistor is the fundamental building block of modern&nbsp;electronic devices, and is ubiquitous in modern electronic systems. Following its release in the early 1950s the transistor revolutionized the field of electronics, and paved the way for smaller and cheaper&nbsp;radios,&nbsp;calculators, and&nbsp;computers, among other things.</p>

<p>&nbsp; &nbsp; &nbsp; The transistor is the key active component in practically all modern&nbsp;electronics, and is considered by many to be one of the greatest inventions of the 20th century. Its importance in today's society rests on its ability to be&nbsp;mass produced&nbsp;using a highly automated process (semiconductor device fabrication) that achieves astonishingly low per-transistor costs.</p>

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Equipped with Your Climbing Hooks and Get Ready to Conquer the Mountains!

        Are you fascinated with the amazing and glorious sceneries seen during the mountain climbing? If so, then you must prepare the climbing hooks to challenge the higher mountains. The sublime atmosphere of mountains always attracts many nature lovers to visit the most dangerous mountains in the world. It is the spirit of adventure that urges them to climb mountains one after another.

       Though it could be very dangerous, even vital to climb some mountains, it is worthwhile when you see the splendid views on top on the world. However, it’s not an easy task to conquer the high mountains. You must have a thorough preparation beforehand. The equipments and foods have to be enough for the whole climbing period in case of any emergency. The climbing hooks are one of the indispensable equipments, for example. The climbing hook is a metal loop with a sprung or screwed gate that is used to quickly and reversibly connect components in safety-critical systems. In addition, they are widely used in rope-intensive activities such as climbing, caving, sailing, construction, and window cleaning.

       So, next time before you head for a new adventure, make sure to check if you are equipped with the appropriate devices. (Don’t forget climbing hooks!)

The Solar Street Light Saves the Energy from Wind and Solar Power

       If you still don’t know what solar street light is, you are definitely out of date! In recent year, people start to reconsider the use of energy. Since the dominant energy source, oil, has become more and more expensive, for the storage reduce continuously, engineers and scientists begin to search other substitute energy source. Other than that, experts warn that our earth has been polluted seriously by human beings. Therefore, the green energy should be value more than any other time. Solar energy, one of the substitute energy, is eco-friendly and without any pollution. It can generate power just by sun light.

       Solar energy is not available at night, making energy storage an important issue in order to provide the continuous availability of energy. Both wind power and solar power are intermittent energy sources, meaning that all available output must be taken when it is available and either stored for when it can be used, or transported, over transmission lines, to where it can be used. Wind power and solar power tend to be somewhat complementary, as there tends to be more wind in the winter and more sun in the summer, but on days with no sun and no wind the difference needs to be made up in some manner. That’s the basic concept of how solar street light operate, using both wind power and solar power to generate electric. The Institute for Solar Energy Supply Technology of the University of Kassel pilot-tested a combined power plant linking solar, wind, biogas and hydrostorage to provide load-following power around the clock, entirely from renewable sources.

       Daylighting systems collect and distribute sunlight to provide interior illumination. This passive technology directly offsets energy use by replacing artificial lighting, and indirectly offsets non-solar energy use by reducing the need for air-conditioning. Although difficult to quantify, the use of natural lighting also offers physiological and psychological benefits compared to artificial lighting. Daylighting design implies careful selection of window types, sizes and orientation; exterior shading devices may be considered as well. Individual features include sawtooth roofs, clerestory windows, light shelves, skylights and light tubes. The solar outdoor lighting may be incorporated into existing structures, but are most effective when integrated into a solar design package that accounts for factors such as glare, heat flux and time-of-use. When daylighting features are properly implemented they can reduce lighting-related energy requirements by 25%.

 

The Usage of Wheel Bearings Protector

       The wheel bearings protector is a small metal cap which fits into the center of your trailer's wheels. It is able to block dirt and moisture from entering your trailer's wheel bearings, helping make the bearings last longer. Trailer bearings stabilize the trailer's wheels and keep the trailer riding smoothly. The bearing protector is used to keep the trailer bearing free of foreign matter, which can interfere with wheel balance and revolution. It also provides an air-tight seal for the bearings.

       Since it’s an important part to keep wheel bearings from damage, it’s necessary that you know how to remove or install the wheel bearings protector. The following steps are the instruction of removing the wheel bearings protector when you need to check the condition of wheel bearings and brakes:

1. Lower the front of the trailer by lowering the tongue jack until the tongue is nearly resting on the ground or the jack bottoms out.
2. Place two jack stands underneath the rear frame of the trailer, which is about halfway between the rear of the trailer and the trailer axle.
3. Raise the front of the trailer.
4. Remove the lug nuts from the wheel using an impact wrench or lug wrench.
5. Insert a flat blade screwdriver between the wheel hub and the raised edge on the bearing protector to pry the bearing protector out of the wheel hub.
6. Pull the bearing protector off with your hand.

How is strong magnet useful?

Strong magnet is very useful. That is why there is a geopolitical tug of war going on between China and other countries over rare earth minerals used to make very strong magnet. China is the largest miner and processor of rare earths and has threatened to cut off export of these materials to other countries that make products with them. 

The torque of a permanent magnet motor is a function of the strength of the magnetic fields in it. You can either increase the strength of the magnets, increase the current in the windings, or both. To make a motor of a given size have the most torque with the least use of electricity you build it with the strongest possible magnets. Other devices like hard drive voice coil mechanisms (which position the heads on the platter) also benefit from stronger magnets so they can move faster with less power consumption.

Basically almost anything that uses a magnetic field from a permanent magnet to do work, generate electricity, or steer beams of particles (MRI machines, nuclear physics particle accelerators, etc.) can benefit from the strongest possible magnetic field from the smallest possible magnets. Hybrid and electric cars simply would not be even close to practical without rare earth magnets becuse the motors would be too big and use too much energy.

Strong magnets are in your Hard Drive, the optics steering hardware of every CD and DVD player in the world, your hybrid or electric car, and hundreds of other applications.

The Structure of Ignition Coil

       The ignition coil is a simple device which is basically a high-voltage transformer made up of two coils of wire. One coil of wire is called the primary coil. Wrapped around it is the secondary coil. The secondary coil normally has hundreds of times more turns of wire than the primary coil. The ignition coil looks like an electromagnet, but it is an inductor as well. The key to the coil's operation is what happens when the circuit is suddenly broken by the points. The magnetic field of the primary coil collapses rapidly. The secondary coil is engulfed by a powerful and changing magnetic field. This field induces a current in the coils -- a very high-voltage current (up to 100,000 volts) because of the number of coils in the secondary winding. The secondary coil feeds this voltage to the distributor via a very well insulated, high-voltage wire.

       In the ignition system, a distributor cap is used in an automobile's engine to cover the distributor and its internal rotor. It has one post for each cylinder, and in points ignition systems there is a central post for the current from the ignition coil coming into the distributor. In high energy ignition (HEI) systems there is no central post and the ignition coil sits on top of the distributor. On the inside of the cap there is a terminal that corresponds to each post, and the plug terminals are arranged around the circumference of the cap according to the firing order in order to send the secondary voltage to the proper spark plug at the right time.

       Car engines that use a mechanical ignition distributor may fail if they run into deep puddles because any water that leaks into the distributor can short out the electric current that should go through the spark plug, rerouting it directly to the body of the vehicle. This in turn causes the engine to stop as the fuel is not ignited in the cylinders. The distributor cap is a prime example of a component that eventually succumbs to heat and vibration. It is a relatively easy and inexpensive part to replace if its bakelite housing does not break or crack first. Carbon deposit accumulation or erosion of its metal terminals may also cause distributor-cap failure.

 

How to Generate Solar power by Solar Panel and Solar Rack?

       Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems, including solar panel and solar rack to focus a large area of sunlight into a small beam. Photovoltaics convert light into electric current using the photoelectric effect.
       Concentrated photovoltaics (CPV) systems employ sunlight concentrated onto photovoltaic surfaces for the purpose of electrical power production. Solar concentrators of all varieties may be used, and these are often mounted on a solar tracker in order to keep the focal point upon the cell as the Sun moves across the sky. Luminescent solar concentrators (when combined with a PV-solar cell) can also be regarded as a CPV system. Luminescent solar concentrators are useful as they can improve performance of PV-solar panels drastically. The fixed solar rack in the solar panel holds panels in a single location as the sun moves across the sky.

The Application of RF Module

      Radio frequency module (RF module) is the devices usually used to amplify the signal of cable televisions or other electronic equipments, such as wireless cables, stereo sets, etc. An RF module is configurable by a user to operate in different modes as a transmitter, receiver, transceiver, and repeater. RF module can transmit signal from a long distance and it is stable.
      Radio frequency (RF) is a rate of oscillation in the range of about 3 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals. RF usually refers to electrical rather than mechanical oscillations, although mechanical RF systems do exist.

The Necessary Saddle Hardware for Riding Horses

        When you want to ride horse, it’s necessary for you to equip with the sound saddle hardware. The saddle is a supportive structure for a rider or other load, fastened to an animal's back by a girth. The most common type is the equestrian saddle designed for a horse, but specialized saddles have been created for camels and other creatures. Nowadays, modern saddle comes in wide varieties of styles, each designed for a specific equestrianism discipline, and require careful fit to both the rider and the horse. Proper saddle care can extend the useful life of a saddle, often for decades

       It is important that the saddle be comfortable for both the rider and the horse as an improperly fitting saddle may create pressure points on the horse's back muscle and cause the horse pain and can lead to the horse, rider, or both getting injured.

       Besides saddle, there is also other important saddle hardware such as breastplate, surcingle, pack saddle, crupper, and breeching. Before you enjoy the exciting activity, check cautiously if you prepare thorough equipments or not.

 

The Ignition Parts in the Automobile Ignition Systems

       A distributor is one of the ignition parts in the ignition system of an internal combustion engine that routes high voltage from the ignition coil to the spark plugs in the correct firing order. The first reliable battery operated ignition was developed by Dayton Engineering Laboratories Co. (Delco) and introduced in the 1910 Cadillac. This ignition was developed by Charles Kettering and was considered a wonder in its day.
       The ignition parts of distributor consists of a rotating arm or rotor inside the distributor cap, on top of the distributor shaft, but insulated from it and the body of the vehicle (ground). The distributor shaft is driven by a gear on the camshaft. (Usually the distributor shaft extends to also drive the oil pump.) The metal part of the rotor contacts the central high voltage cable from the coil via a spring loaded carbon brush. The metal part of the rotor arm passes close to (but does not touch) the output contacts which connect via high tension leads to the spark plug of each cylinder. As the rotor spins within the distributor, electrical current is able to jump the small gaps created between the rotor arm and the contacts due to the high voltage created by the ignition coil.
       The auto ignition distributor handles several jobs. Its first job is to distribute the high voltage from the coil to the correct cylinder. This is done by the cap and rotor. The coil is connected to the rotor, which spins inside the cap. The rotor spins past a series of contacts, one contact per cylinder. As the tip of the rotor passes each contact, a high-voltage pulse comes from the coil. The pulse arcs across the small gap between the rotor and the contact (they don't actually touch) and then continues down the spark-plug wire to the spark plug on the appropriate cylinder.

Solar Outdoor Lighting Saves the Energy

      The reason why we have solar outdoor lighting is because energy saving becomes a more and more popular issue nowadays. Solar outdoor lighting is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP) or to split water and create hydrogen fuel using techniques of artificial photosynthesis. Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics convert light into electric current using the photoelectric effect.
      In the 20th century artificial lighting became the main source of interior illumination but daylighting techniques and hybrid solar lighting solutions are ways to reduce energy consumption.
      Daylighting systems collect and distribute sunlight to provide interior illumination. This passive technology directly offsets energy use by replacing artificial lighting, and indirectly offsets non-solar energy use by reducing the need for air-conditioning. Although difficult to quantify, the use of natural lighting also offers physiological and psychological benefits compared to artificial lighting. Daylighting design implies careful selection of window types, sizes and orientation; exterior shading devices may be considered as well. Individual features include sawtooth roofs, clerestory windows, light shelves, skylights and light tubes. They may be incorporated into existing structures, but are most effective when integrated into a solar design package that accounts for factors such as glare, heat flux and time-of-use. When daylighting features are properly implemented they can reduce lighting-related energy requirements by 25%.
      Solar lights that charge during the day and light up at dusk are a common sight along walkways. Although daylight saving time is promoted as a way to use sunlight to save energy, recent research has been limited and reports contradictory results: several studies report savings, but just as many suggest no effect or even a net loss, particularly when gasoline consumption is taken into account. Electricity use is greatly affected by geography, climate and economics, making it hard to generalize from single studies.

Introduction of Selective Pallet Rack/Racking Systems

       The selective pallet rack/racking is the most common pallet racking system in use today. It’s typically come in one of two configurations: a roll formed, or clip-in configuration, and a structural bolt-together configuration. Roll formed selective rack is most commonly manufactured in a "teardrop" style. The nickname “teardrop” comes from the fact that the holes on the column of the upright are shaped like a teardrop. Pallets then rest on the horizontal load beams that are held in place by mounting clips. Because the clips on teardrop configurations can be quickly moved, the shelves can be easily adjusted to different heights to accommodate various load sizes. This is convenient for a warehouse that needs to store a wide variety of product sizes.
       Structural pallet rack systems are very similar to roll formed pallet rack systems except the horizontal load beams are attached to the uprights with bolts and have much greater weight-bearing capacity. Also, structural pallet racking can be designed into the structure of the building itself, so that the upright columns are simultaneously used to support the roof of the storage facility, in which case the structural pallet rack uprights replace the storage building’s vertical support I-beams.

       One of the most popular forms is the mezzanine rack system. In this kind of pallet rack, it is often used in shops and similar spaces for storage of tools or materials. The high roof of the shop is ideal for a mezzanine, and offices can be put either below or above it. Mezzanines are frequently used in industrial operations such as warehousing, distribution or manufacturing. These facilities have high ceilings, allowing unused space to be utilized within the vertical cube. Industrial mezzanine structures are typically either structural, roll formed, rack-supported, or shelf-supported, allowing high density storage within the mezzanine structure.

The Significant Equipments for Rock-climbing, Climbing Hooks

       Climbing is the activity of using one's hands and feet (or indeed any other part of the body) to ascend a steep object. It is done both for recreation (to reach an inaccessible place, or for its own enjoyment) and professionally, as part of activities such as maintenance of a structure, or military operations. And ascending rock formations, which called rock-climbing, often use climbing shoes and a chalk bag. Equipment such as ropes, bolts, nuts, hexes, climbing hooks and camming devices are normally employed, either as a safeguard or for artificial aid. In the following article, I’ll focus on a brief summary of climbing hooks.
       Climbing hooks, also known as carabiners, are metal loops with spring-loaded gates (openings), used as connectors. Once made primarily from steel, almost all carabiners for recreational climbing are made from a light weight aluminum alloy. Steel carabiners are harder wearing, but much heavier and often used by instructors when working with groups. Carabiners exist in various forms; the shape of the carabiner and the type of gate varies according to the use for which it is intended. There are two major varieties: locking and non-locking carabiners. Locking carabiners offer a method of preventing the gate from opening when in use. Locking carabiners are used for important connections, such as at the anchor point or a belay device.
       A nut tool (or nut key) is a small piece of equipment used to extract nuts from cracks in rock that cannot be extracted by hand; they are especially useful when a nut becomes tightly lodged in a crack after supporting a climber's weight or arresting a fall. Made from a flat piece of sheet steel about 20 cm long, a nut tool has climbing hooks at one end and a handle at the other. In order to shift a particularly stubborn nut, a nut tool will sometimes have to be hammered into place.

How to Choose a Suitable Pallet Rack?

       The pallet rack is a material handling storage aid system designed to store materials on pallets. Although there are many varieties of pallet racks, all types allow for the storage of palletized materials in horizontal rows with multiple levels. Being the least expensive and cost increasing with storage density, pallet rack creates some level of increase storage density with the least dense. Forklift trucks are usually an integral part of any pallet rack system since they are usually required to place the loaded pallets onto the racks for storage. It is an essential and ubiquitous element in most modern warehouses, manufacturing facilities, retail centers, and other storage and distribution facilities.

       Because of the size and weight of pallets, important safety factors have to be considered in choosing the pallet rack:

1. Keep an eye on any loose components in the pallet rack system.
2. Bear the following statement in mind!
   “Never climb on racks during or after assembly. Storage racks are not designed to be stepped on or climbed on. A slip or fall may result in serious injury.”
3. Use only quality pallets that are not damaged.
4. Always ensure that the proper motorized equipment is being used for the application.
5. Do not obstruct the end of aisles by staging pallets in these areas.
6. Never overload or exceed the recommended load specifications for a racking system.
7. Rack Audits should be performed on a regular basis by a qualified inspector.

 

The Steady-state Tantalum Capacitor

The tantalum capacitor is a highly reliable type of solid capacitor or electrolytic capacitor. Surface mount tantalum capacitors are increasingly being used in circuit designs because of their volumetric efficiency, basic reliability and process compatibility. The dynamic reliability of a tantalum capacitor are influenced by several factors under the control of the circuit design engineer. These factors are voltage derating, ripple current and voltage conditions, maximum operating temperature and circuit impedance. Tantalum capacitors possess very low electrical leakage (high leakage resistance), and will retain a charge for a long duration. They are tolerant of hot operating environments up to 125 °C, unlike standard aluminum electrolytic capacitors.

Tantalum capacitors are not particularly tolerant of heavy charge and discharge currents, particularly those of a repetitive nature, and their effective series resistance (ESR) can be high when compared to ceramics or aluminum electrolytics. Most tantalum capacitors are polarized devices; correct polarity must be observed, otherwise the capacitor will depolarize and the dielectric oxide layer will break down, reducing the resistance of the device and causing it to fail. Tantalum capacitors are relatively expensive, particularly the military grades.

The low leakage and high capacity of tantalum capacitors favors their use in sample and hold circuits to achieve long hold duration, and some long duration timing circuits where precise timing is not critical. They are also often used for power supply rail decoupling in parallel with film orceramic capacitors with low ESR and reactance at high frequency. Tantalum capacitors can replace aluminum electrolytic capacitors in situations where the external environment or dense component packing results in a sustained hot internal environment and where high reliability is important. Equipment such as medical electronics and space equipment that require high quality and reliability make use of tantalum capacitors.

 

The Useful Solar Charge Controller

      A solar charge controller is a device which protects the batteries in a solar electric system from being overcharged or being over-discharged. It is needed in virtually all solar power systems that utilize batteries. Since the electrolyte is boiled of, overcharged batteries will significantly shorten battery life. The most basic solar charge controller simply monitors the battery voltage and opens the circuit, stopping the charging, when the battery voltage rises to a certain level.

      Solar charge controller becomes an substance equipment since solar energy stands out as the pollution-free energy. Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar radiation, along with secondary solar-powered resources such as wind and wave power, hydroelectricity and biomass, account for most of the available renewable energy on earth. Only a minuscule fraction of the available solar energy is used.

      Solar powered electrical generation relies on heat engines and photovoltaics. Solar energy's uses are limited only by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, solar hot water, solar cooking, and high temperature process heat for industrial purposes.To harvest the solar energy, the most common way is to use solar panels.

       Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.

 

Why Are Injection Molded Parts Expansive?

Injection molding is an economical and very efficient method of producing injection molded parts. It can produce millions of parts with exactly the same shape, dimension, and quality. Some examples of injection molded parts are the mobile phones, mouse, keyboard, and many components found inside the automobile.

Injection molded parts are made up of special, high quality steels that have a good machinability property. Some standard mold components such as springs, bolts, and limit switch are prefabricated and costs lower.

Most standard components such as ejector pins, ejector sleeves, sprue bushings, and leader components are not prefabricated which mean they will only be manufactured when you order them. They are not mass produced thus they are expensive. The cavity and core are mold components which make the mold really expensive. It involves careful design engineering and processing. Most of the tools used in making these components are very expensive.

The Introduction of Manual hoist

A manual hoist is a suspended machinery unit that, by use of manual operation, is used for the lifting and lowering of a freely suspended (unguided) load. A manual hoist generally uses chain (roller or link) as its lifting medium.

Manual hoists have a wide range of lifting capacities and can be used either for vertical lifting and lowering or for horizontal pulling.

A manual hoist is operated by hand. An operator will pull down on one of the chain loops on one side of the chain. This will turn a pulley mechanism inside the chain hoist housing. When this pulley turns, it will lift up the end of the other chain which usually has a hook on the end. By pulling down on one chain, the manual hoist is actually able to increase the mechanical work that is being done. This is caused by the gear ratio inside the manual chain hoist.

 

What is a waterproof power connector?

The Waterproof Power Connector is an interface to carry electric energy like DC or AC with low frequency. And the product supplied by means of GT Touch (GTC) is easiest identified for its applications to the ability usage of PV inverter, wi-fi outdoor AP, out of doors LED display and lights, out of doors lamp, marine, and automation machine.

This type of mini connectors which raise small amount of energy are known as power connectors, and the voltage carried by means of our waterproof power connector is 600V AC/DC. As for its resistance to water, this product has beentested in a 1 M intensity water setting for 24 hours. Therefore the quality of the water resistant layer is definitely guaranteed.Please touch with us today and we're glad to present you this remarkable product.

No Fear for Water Damage Anymore with the Waterproof USB Connector!

       The waterproof USB connector is applied to signal usage for PV inverter, outdoor LED display, marine or automation machine, and IPC/Military NB. It can be widely applied in many aspects. With this connector, your equipment is waterproof. Take the underwater camera housing for instance. It’s an excellent camera for taking beautiful photos under water; however, it is prone to get humidity, dirt and dust problems if you open them more often than needed. So, in order to download the images off of the digital camera between dives, it’s better to install a waterproof USB connector to the housing. Also, for industry computer, it’s also a very important device to prevent water from entering computer.

       Therefore, if you worry that your device will damage because of water, waterproof USB connector may solve your problem.

 

The Advanced Radar Technology of RF Transistor

       During the war, radar technology is the crucial technique for troops to detect where enemy is. That is to say, in order to give the allies an edge, scientists developed radar technology to "see" for hundreds of miles, even at night. The research that went into improving radar arouses the stage for post-war research into the transistor such as RF transistor.
       In 1940, radar relied on a semiconductor crystal, or "rectifier," to send out a radio wave and analyzing the reflected wave after it bounced off any objects in the air. The rectifier's job was to translate the reflected signal into the direct current necessary for visualization on the screen. Nevertheless, these crystals often couldn't handle the quickness and intensity of a rapidly changing radar signal. They would burn out frequently.
       Finally, after trying different semiconductors and doping with different materials, researchers learned which combinations produced the best results and also learned new techniques on how best to grow and dope the crystals. That was when transistor like RF transistor had been found on that day.

Wear the Ear Muffs to Protect Your Ear

       Have you ever worn the ear muffs? If you are in a noisy environment or in a cold area, ear muffs could be your savior! They can protect your ears from hearing losses or frostbite. Designed to cover a person's ears for protection, they consist of a thermoplastic or metal head-band, which fits over the top of the head, and a pad at each end, to cover the external ears.
       There are two kinds of ear muffs nowadays. The first one is thermal ear muffs, worn in cold environments to keep a person's ears warm. Another one is acoustic ear muffs, also known as ear defenders. This kind of ear muffs equipped with sound-deadening material, like thermal earmuffs and headphones in appearance, which are worn as hearing protection. Ear defenders protect the wearer from extreme noises. The head band and outer covering is usually made from a hard thermoplastic or metal. The protection usually comes from acoustic foam—this absorbs sound waves by increasing air resistance, thus reducing the amplitude of the waves.
       So, next time when you travel to a freezing country or visit a noisy factory, don’t forget to bring you ear muffs!

The Manufacturing Technique in Plastic Injection Manufacturer

       The plastic injection manufacturer in this industry has evolved over the years from producing combs and buttons to producing a vast array of products for many industries including automotive, medical, aerospace, consumer products, toys, plumbing, packaging, and construction.

       In a plastic injection manufacturer, granular plastic is fed by gravity from a hopper into a heated barrel with injection molding. As the granules are slowly moved forward by a screw-type plunger, the plastic is forced into a heated chamber, where it is melted. As the plunger advances, the melted plastic is forced through a nozzle that rests against the mold, allowing it to enter the mold cavity through a gate and runner system. The mold remains cold so the plastic solidifies almost as soon as the mold is filled.

       The plastic injection molding is used to create many things, such as wire spools, packaging, bottle caps, automotive dashboards, pocket combs, some musical instruments (and parts of them), one-piece chairs and small tables, storage containers, mechanical parts (including gears), and most other plastic products available today. It is the most common method of part manufacturing, ideal for producing high volumes of the same object. Some advantages of injection molding are high production rates, repeatable high tolerances, the ability to use a wide range of materials, low labor cost, minimal scrap losses, and little need to finish parts after molding. On the contrary, the disadvantages of this process are expensive equipment investment, potentially high running costs, and the need to design moldable parts for molded plastic.

 

The Necessity of Wearing Outdoor Sports Clothing When Exercising

       When you are doing outdoor activities or exercising, you should have the correct concept that wearing the suitable outfit is necessary. The outfit you wear for exercise should be light-weighted, for instance. According to different activities, there are different outdoor sports clothing for you to choose. It is a type of clothing, including footwear, worn for sport or physical exercise. Sport-specific clothing is worn for most sports and physical exercise, for practical, comfort or safety reasons.

       Typical outdoor sports clothing includes shorts, tracksuits, T-shirts, tennis shirts and polo shirts. Specialized garments include wetsuit/foul weather gear (for swimming, diving or surfing) and salopettes (for skiing) and leotards (for gymnastics). Furthermore,  sportswear is designed to be light weight so as not to encumber the wearer. The best athletic wear for some forms of exercise, like cycling, should not create drag or be too bulky. On the other hand, sportswear should be loose enough so as not to restrict movement. Some sports have specific style requirements, for example the Keikogi used in karate. Various physically dangerous sports require protective gear, e.g. for fencing, American football or ice hockey.

       Finally, outdoor sports clothing design must consider the thermal insulation needs of the wearer. In hot situations, sportswear should allow the wearer to stay cool; while in cold situations, sportswear should help the wearer to stay warm.

The Powerful Electronic Amplifier—RF Module Amplifier

       Are you often annoyed by the poor quality of your cable television? That’s because you neglect to install the amplifier for your cable. The RF module amplifier is a type of electronic amplifier used to convert a low-power radio-frequency signal into a larger signal of significant power, typically for driving the antenna of a transmitter. It is usually optimized to have high efficiency, high output Power(P1dB) compression, good return loss on the input and output, good gain, and optimum heat dissipation.

       The amplifier is a device for increasing the power of a signal; as a consequence, with the assistance of RF module, the quality of your cable television will improve a lot. Besides using on cable TV, there are other applications of RF module. In audio applications, amplifiers drive the loudspeakers used in PA systems to make the human voice louder or play recorded music.

What is Ignition Distributor System?

       The ignition distributor handles several jobs. Its first job is to distribute the high voltage from the coil to the correct cylinder. And the coil is connected to the rotor, which spins inside the cap. The rotor spins past a series of contacts, one contact per cylinder. As the tip of the rotor passes each contact, a high-voltage pulse comes from the coil. The pulse arcs across the small gap between the rotor and the contact (they don't actually touch) and then continues down the spark-plug wire to the spark plug on the appropriate cylinder.

       The engine is like a big pump. It pumps air and gas in, then pumps exhaust out. The byproduct is a lot of energy that is sent to the wheels and exhaust out the tailpipe. That's the basic of all basic descriptions. Engine mixes air and fuel, then adds a spark to make the explosion. This spark ignites the air-fuel mixture, and is referred to as the ignition. This ignition takes place thanks to a group of components working together, otherwise known as the ignition system. The ignition distributor system consists of an ignition coil, distributor, distributor cap, rotor, plug wires and spark plugs. Older systems used a points-and-condenser system in the distributor, newer ones use an ECU, a little brain in a box, to control the spark and make slight changes in ignition timing.

The Injection Molding of Liquid Silicone Rubber Parts (LSR)

       The injection molding of liquid silicone rubber parts (LSR) is a process to produce pliable, durable parts in high volume. Liquid silicone rubber(LSR) is a high purity platinum cured silicone with low compression set, great stability and ability to resist extreme temperatures of heat and cold ideally suitable for production of parts, where high quality is a must. Due to the thermosetting nature of the material, liquid silicone injection molding requires special treatment, such as intensive distributive mixing, while maintaining the material at a low temperature before it is pushed into the heated cavity and vulcanized.
       Liquid silicone rubber Parts (LSR) is a high purity platinum-cure silicone, which is used in a wide range of industries. This material is favored by medical device manufacturers because of its biocompatibility, excellent part quality, and potential for reduced risk of contamination when manufactured in a clean-room environment.
       In order for the liquid injection molding process to fully occur, several mechanical components must be in place. Typically, a molding machine requires a metered pumping device in conjunction with an injection unit—a dynamic or static mixer is attached. An integrated system can aid in precision and process efficiency. The critical components of a liquid injection molding machine include injectors, metering units, supply drums, mixers, nozzle, mold clamp, etc.

Want to Have a Warm and Splendid Home? Start From Choosing the Style of PVC Decorative Panel for Your Home

       It’s always a big task to decorate a house, but it’s also worthwhile when you finish decorating and start to enjoy the comfortable living place. So, where should you start from? Furniture? The answer is no. You should decide what kind of style you want for your house. Do you want the soothing atmosphere or the avant-garde modern design?One thing that matters a lot when you decide your style is the selection of decorative panel. If you want to save your money as well as maintain the quality. I’ll recommend you to choose PVC decorative panel.
       The features of PVC decorative panel are that it has high glossy surface and a huge variety of design. Since PVC has become one of the commonest materials used in everywhere, there are various shades for choice. Furthermore, the mirror-like surface increases the brightness of the delicate environment. Therefore, don’t neglect this part while you’re busying shopping with all the furniture for your house. Take a break from your stuffed shopping schedule, and try to figure out the most significant thing of all—the style you want!

Replace the Air Intake Hose in Your Car Regularly

       The air intake hose is the linking part of air cleaner for automobiles, motorcycles, scooters, quad bikes (dune buggy). Its purpose is to reduce noise level and vibration. There is an air intake system in your car, and it needs to be airtight so as to function properly. Besides, you should also pay attention to the air intake hose. Once it gets old or cracks, the vehicle won’t function properly.
       With the help of air intake hose, your car can filter the air which goes into the intake manifold. Otherwise, trash or other particles will enter the manifold and then move to the engine part of a vehicle. If it happens, your vehicle can’t run efficiently. Furthermore, this kind of problem will be aroused when the air intake hose becomes dried, cracked or flat out old.
        As a result, you should check your air intake hose routinely. As soon as you find it is broke, replace it immediately. By doing so can your vehicle have a good performance.

The Function of Ball Mount in the Towing System

       Do you know what ball mount is? If you plan to tow, you'll need to select the best components to make up your entire towing system. Accessories like Hitches, receivers, ball mounts and hitch couplers are the main components that make up a complete towing system. Some hitches are used for heavy-duty and commercial use. Some even resemble those seen on tractor trailers.
       Choosing the proper ball mount just like choosing almost any other towing accessory. Safety is the most important thing to keep in mind. Selecting the proper ball mount involves taking some measurements from both your tow vehicle and the trailer you plan to haul. First of all, measure the height of ball mount. Then, determine ball mount size. In addition, there are some reminds for you to know before you making choice.

1. Some ball mounts have a drop on one side and can be turned upside down if a rise is needed.
2. You can purchase a ball mount that is straight, without a rise or drop, if no adjustments are necessary.
3. Measuring from the wrong location on the ball mount for the rise or drop can make your trailer sit out of level when attached to the ball mount.

Protect Your Stuff from Falling by Wire Decking

Wire Decking is commonly used as a safety measure on selective pallet rack to prevent pallets or the products stored on them from falling through the rack structure. Wire mesh decking comes in various thicknesses and mesh dimensions. Wire mesh construction also allows for easy identification of shelf contents and prevents dirt and other debris from accumulating on the shelves because of the holes in the mesh. Most wire mesh decking has U-shaped channel supports, also known as struts, to support the load. With this waterfall decking, the wire mesh extends across the top and down the front of the beam to provide more support. Reverse waterfall decking can provide containment of a loose product to prevent the product from falling behind the rack system. Lay-in wire decking rests inside the step of the beam, and wire mesh does not waterfall over the beam.
Some types of decking are manufactured with solid metal instead of wire mesh. Even though the solid decking provides a greater distributed weight capacity, it is discouraged by fire inspectors because sprinkler systems cannot spray through the shelves to levels below.

The Data Analysis Process of DAQ

       Analysis of data is a process of inspecting, cleaning, transforming, and modeling data with the goal of highlighting useful information, suggesting conclusions, and supporting decision making. Data analysis has multiple facets and approaches, encompassing diverse techniques under a variety of names, in different business, science, and social science domains. And the data acquisition systems (abbreviated with the acronym DAS or DAQ) typically convert analog waveforms into digital values for processing.

       In nuclear and particle physics the data usually originate from the experimental apparatus via a DAQ. It is then processed, in a step usually called data reduction, to apply calibrations and to extract physically significant information. Data reduction is most often, especially in large particle physics experiments, an automatic, batch-mode operation carried out by software written ad-hoc. The resulting data n-tuples are then scrutinized by the physicists, using specialized software tools like ROOT or PAW, comparing the results of the experiment with theory.

Solar Rack Helps to Sustain the Solar Panel

       A solar panel is a packaged, interconnected assembly of solar cells, also known as photovoltaic cells. And the solar rack is used to sustain the solar panels. The solar panel can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. Because a single solar panel can produce only a limited amount of power, many installations contain several panels. A photovoltaic system typically includes an array of solar panels, an inverter, and sometimes a battery and interconnection wiring.
       The whole solar mounting system is composed by trackers, fixed solar rack, ground mounted systems, and roof mounted systems.

1. Tracker: Solar Trackers increase the amount of energy produced per panel at a cost of mechanical complexity and need for maintenance.
2. Fixed Solar Rack: it hold panels in a single location as the sun moves across the sky. It can set the angle at which the panel is held. Tilt angles equivalent to an installation's latitude is common.
3. Ground Mounted System: Ground Mounted solar power systems consist of solar panels held in place by racks or frames which are attached to ground based mounting supports.
4. Roof Mounted Systems: Roof Mounted solar power systems consist of solar panels held in place by racks or frames which are attached to roof based mounting supports.