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2011年6月24日 星期五

Semiconductors: An Important Element Available in Every Electronic Device!


Semiconductors are available in every electronic device which is used in the modern days including computers, telephones, radio etc. These semiconductors have entered every electronic device and now every human's life that are using these electronic gadgets. This has greatly increased the demand of semiconductor manufacturing companies. There are many top semiconductor manufacturing companies in the world who manufacture high quality silicon wafers. They are running business to provide various semiconductor turnkey solutions to the customers.

Today these semiconductors have become a part of our life and without these devices we can't survive. Whether you talk of computer which is lifeline or telephones which keep us connected, all have semiconductor in some form or the other. Basically, a semiconductor is a material which is having the special characteristics that enables it to conduct small amount of electrical current in a controlled manner. This electrical conductivity can be controlled either permanently or dynamically, depending on the requirement of the device it is used in. The devices like diodes, transistors and photovoltaic cells contain these semiconductors. It is found that these semiconductor materials have much lower resistance to the flow of electrical current in one direction than in another.

It's are made of several materials, not any single material forms these semiconductors. It is a known fact that semiconductors should not be a very good conductor of electricity, nor should it be a bad conductor of electricity. One amazing thing associated with these semiconductors is that their properties can be changed with the help of atoms. By adding or removing the atoms, one can do that. While creating semiconductors the materials used are many but the most widely used semi-conductor material is silicon. Other materials which aid to the development of this element are gallium arsenide, germanium and silicon carbide. Companies which provide semiconductor turnkey solutions make use of all of these materials in optimum quantity.

Whether you want integrated circuit test and assembly services or any other service related to semi-conductors, you will find numerous companies world over. Few of the popular names which are into the manufacturing of these semiconductors include AMI Semiconductor, Analog Devices, Amtel, Cosmic Circuits, Dynex Semiconductor, Elpida Memory, Fujitsu, IBM, Intel Corporation, Panasonic Corporation, Luxtera, Materials Research Corporation, Microchip Technology, National Semiconductor, Numonyx, Oramir, Sanyo, Seiko, Sitronics, Sony, Texas Instruments, Toshiba, Winbond to name a few. All these companies are related to the semiconductor manufacturing services, one or the other way.








Author has 3 years experience in Internet Marketing. Today's world semiconductors materials are most useful for semiconductor solutions and semiconductor turnkey solutions.


2011年6月20日 星期一

Important Facts About and Uses of Deionized Water


Deionized water is also spelled deionised water or called DI water. Another name for it which sounds a little more understandable for many people is demineralised water. However it is called or spelled, it means water that has extremely little ions or minerals in it. Ions are charged atoms. Atoms become charged after gaining or losing at least one electron. A sodium atom (Na) becomes a sodium ion after losing an electron (Na+). A chlorine atom (Cl) becomes a chloride ion (Cl-) after gaining an electron. Metallic salts are composed of ions and not molecules. That is why they are called ionic compounds. The popular example has just been given. Table salt is sodium chloride (NaCl) and it is a popular household ionic substance. For those who have forgotten basic chemistry, NaCl is not composed of molecules of NaCl but is actually composed of ions of Na+ and Cl- bound tightly together by strong electrostatic forces. However, water does the trick in separating these ions. As table salt dissolves in water it dissociates to its component ions. The same thing happens to any other salts in water, and because water is a remarkable solvent, it is never found in pure form, but has always impurities. Filtration and chlorination of water may remove organic impurities and bacteria, but minerals may still be present. These minerals are present in form of ions like calcium (Ca++) and magnesium (Mg++) as well as chlorides, nitrates and carbonates. Though water that contains minerals or ions may not be a health concern, it has some industrial drawbacks. For instance, tap water, which has lots of ion impurities leaves stains or spots on surfaces when used as a cleaning agent. This is where deionization steps in.

Deionization is the process of removing ionic impurities in water. It is also called demineralization. In the industrial scene, this may involve two phases. The first phase removes positive ions of sodium, potassium, calcium, magnesium and iron. They are displaced by hydrogen ions (H+). The second phase removes negative ions like chloride, nitrate, and bicarbonate. These are then displaced by hydroxyl ions (OH-). The resulting water teems with hydrogen and hydroxyl ions, which actually fuse to form water molecule. Both phases use resin beads which serve as an ion exchange site.

The resulting water is said to have no pH value since there are no ions to measure the pH by. However, water that is stripped of its ions is a more aggressive solvent. If left in an open container, it sucks carbon dioxide from the air. This results to an acidic solution causing water to assume a lower pH value. Nevertheless, heating the solution to the boiling point may remove carbon dioxide and restore water's deionized quality.

There are controversies as to the effects of demineralised water upon drinking it. There is a fear that because it is too pure it may actually be harmful to humans. Extremely pure water will rob the body off its useful electrolytes or ions. The matter with this claim is that it is based upon little evidence.

Industrial purposes of deionized water can never be refuted. It claims extensive application in the semiconductor industry as it is used during processing and cleaning of materials like silicon wafers. The optics industry also relies on this type of highly pure water, since optical surfaces are supposed to be extremely clean as a requirement for coating. Laboratory glasswares are rinsed in DI water as tap water is never recommended for this purpose. Water that is devoid of ions is also used in car wash shops. It is also very suitable and is in fact used in window cleaning. The efficacy of this pure water as a cleaning agent is due to its aggressiveness as a solvent, since water that contains no dissolved ions will tend to draw ions or solutes from the surroundings and surfaces. This means no spots or stains is left on surfaces.

Furthermore, in the manufacture of pharmaceutical and cosmetic products, DI water is often used because it does not contain impurities that may cause unwanted reactions with other substances used in these products.








Jo is an author and publisher for 'The-Water-Company.com', a well-known UK stationed high quality water manufacturer for more than thirty years, providing products like deionized water and demineralized water to a wide variety of consumers in UK, Europe and all over the world. If you have a high quality autoclave water needs then take a look at The-Water-Company.com.


2011年4月17日 星期日

Important facts about and uses of deionized water


Deionized water is also spelt deionized water or call. Another name that sounds a bit more understandable to many people is demineralized water. However, it is called or spelled, it means water which is extremely little ions or minerals in it. The ions are charged atoms. Atoms become charged after gain or lose at least one electron. A sodium atom (Na) becomes a sodium ion after losing an electron (Na +). An atom of chlorine (Cl) becomes a chloride ion (CL?) after gaining an electron. Metallic salts are composed of ions and molecules do not. That's why they're called Ionic compounds. The example was just as popular. Table salt is sodium chloride (NaCl) and is a popular household Ionic substance. For those who have forgotten the basic chemistry, NaCl is not composed of molecules of NaCl, but is actually composed of ions Na + and Cl-bound tightly together by electrostatic forces. However, water does the trick to separate ions. As table salt dissolves in water dissociates to its component ions. The same thing happens at any other salts in water and why water is a solvent, it is never found in pure form, but he always impurities. Filtration and chlorination of water can remove organic impurities and bacteria, but minerals may still be present. These minerals are present in the form of ions such as calcium (Ca ++) and magnesium (Mg ++), as well as chlorides, nitrates, and carbonates. If the water contains minerals and ions cannot be a health problem, has some drawbacks. For example, tap water, which has a lot of impurity ions leave blemishes or stains on the surfaces when used as a cleaning agent. This is where deionization steps.

Deionization is the process of removal of ionic impurities in the water. It is also called demineralization. In the industrial scene, this may involve two phases. The first phase removes positive ions of sodium, potassium, calcium, magnesium and iron. They are displaced by hydrogen ions (H +). The second step removes negative ions such as chloride, nitrate and sodium bicarbonate. These are then moved from hydroxyl ions (OH-). The resulting water teems with hydrogen and hydroxyl ions, which fuse to form water molecule. Both stages use resin beads that serve as an ion-exchange site.

The resulting water is said to have no value of pH since there are no ions to measure the pH. However, water is stripped of its solvent ion is a more aggressive. If left in an open container, which sucks the carbon dioxide from the air. The result of an acidic solution, causing the water to take a lower pH value. However, the solution to the boiling point of heating can remove carbon dioxide and restore the quality of deionized water.

There are controversies about the effects of demineralized water to drinking. There is a fear that because it is too pure may actually be harmful to humans. Water extremely pure steal the body out of its electrolyte ions or useful. The issue with this statement is based on very little evidence.

Industrial purposes never deionized water can be rebutted. It supports extensive application in semiconductor industry, as it uses during processing and cleaning of materials as silicon wafer. The optical industry also relies on this type of high purity water, since the optical surfaces are supposed to be extremely clean as requirement for the coating. GLASSWARES laboratory are rinsed in water as tap water is never recommended for this purpose. Water that is free of ions is also used in car wash shops. It is also very suitable and is used in the cleanup. The effectiveness of this pure water as a cleaning agent due to its aggressiveness as a solvent, since water that does not contain dissolved ions will tend to draw solutes by ions or surrounding surfaces. This means that no spots or stains left on surfaces.

In addition, in the manufacture of pharmaceutical products and cosmetics, water is often used because it does not contain impurities that can cause adverse reactions with other substances used in these products.








Jo is an author and Publisher for '-Water-Company.com ', a well known producer of high quality water settled in the United Kingdom for over thirty years, supplying products such as deionized water and water demineralized a wide range of consumers in the United Kingdom, Europe and worldwide. If you have a high quality water autoclave therefore needs to take a look of The Water-Company.com.


2011年4月6日 星期三

How to work the pressure sensors? -Important information on these devices is vital


This article offers some vital information to answer the question about "how pressure sensors work?" It also provided data on possible applications of pressure transducers. There are many applications of these devices, especially in the industrial setting, although they are also useful in monitoring the pressure in the tyres of cars. A common design for them, such as pressure sensors Keller, is one that makes use of Piezoresistive materials. These materials have the unusual feature that changes resistance correspondingly by force or pressure that is applied on them. These materials are the key element of the sensors, which is the sensing diaphragm. This diaphragm is designed so that its movement depends on the amount of pressure is applied. However, it is also common for people to investigate "as pressure sensors work?," because they realize that part of the systems to continuously monitor the pressure of the tyres.

For those who are inquiring "how pressure sensors work?" and I am also interested on mechanisms of tire pressure sensor, this is a type of technology that is designed for security. Warning to the driver in case of a low pressure. This type of system (TPMS) tire pressure monitoring was tasked by the National Highway Traffic Safety Administration for all vehicles that are sold after 2008. There are two categories for the TPM and these are the direct and indirect systems. The direct TPMS has installed for each tyre constantly monitor the pressure of tyre pressure transducers. However the PGT indirect calculates the air pressure in pneumatic measuring the other variables, including the tyre revolution per minute.

Can be of various kinds and include the differential gauge, Piezoresistive, air, digital pressure sensor and absolute vacuum. However, one of the most common projects using Piezoresistive materials, which means that the current is directly proportional to the applied pressure. The material is normally used is semiconductor Silicon. Several thin silicon wafers are placed in between protective materials.

So, how do pressure sensors work when they are applied in particular to ensure that the car tire pressure range correct? Well, there are two fundamental components of direct TPM and these are the radio transmitter for sending information to the computer of the vehicle and the pressure sensor is inserted inside the rim of the tire. Radio transmission is through the antenna of the car, which detects signals and then route them to the central control system. However, the indirect type of TPM, pressure transducers are not needed. The amount of pressure in the tires is estimated by determining the diameter of the tyre. In turn, the diameter of the tyre shall be calculated using the rotation speed as input. If the computer detects a bit faster rotation speed for one of the tires, warns the driver that this particular tire has a low air pressure, because it has a smaller diameter.








To learn more about the function of pressure sensors. Visit review of pressure sensors.