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Search Results - Semiconductor

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A semiconductor is a material that has an electrical conductivity between that of a conductor and an insulator, that is, generally in the range 103 Siemens/cm to 10-8 S/cm. Devices made from semiconductor materials are the foundation of modern electronics, including radio, computers, telephones, and many other devices. Semiconductor devices include the various types of transistor, solar cells, many kinds of diodes including the light-emitting diode, the silicon controlled rectifier, and digital and analog integrated circuits. Solar photovoltaic panels are large semiconductor devices that directly convert light energy into electrical energy. An external electrical field may change a semiconductor's resistivity. In a metallic conductor, current is carried by the flow of electrons. In semiconductors, current can be carried either by the flow of electrons or by the flow of positively-charged "holes" in the electron structure of the material.

Common semiconducting materials are crystalline solids but amorphous and liquid semiconductors are known, such as mixtures of arsenic, selenium and tellurium in a variety of proportions. They share with better known semiconductors intermediate conductivity and a rapid variation of conductivity with temperature but lack the rigid crystalline structure of conventional semiconductors such as silicon and so are relatively insensitive to impurities and radiation damage.

There are three popular ways to classify the electronic structure of a crystal.

In a single H-atom an electron resides in well known orbits. Note that the orbits are called s,p,d in order of increasing circular current.

Showing 1 to 25 of 120 Articles matching 'Semiconductor' in related articles.
Pages: 1 | 2 | 3 | 4 | 5 | Next >>

1. "Unlimited" web hosting plan - smart marketing technique?
November 16, 2009

The two basic elements of any web hosting plan comprise of: 1) available hard disk space to accommodate the website 2) allowed traffic. Definitions: hard disk space is the space that is allocated for your website by a hosting company; traffic is the amount of data sent and received by visitors to/from a web site. Like in the physical world, any resources, including web resources, have physical restrictions and cost money. It is impossible to have unlimited RAM and CPU as there is no such invention as an unlimited semiconductor (yet!). Why, then, some of the... (read more)

Author: ilia kalatay

2. Industrial Electrical Supplies
November 05, 2009

Several branches of technology and engineering are available for industrial application. In automation, industrial architecture, industrial design, industrial process, industrial arts and industrial applicability, there will be a need for products to support continuing development and manufacturing of products and services. Products of the industry may be identified among chemical industry, petroleum industry, automotive industry, meatpacking industry, hospitality industry, food industry, fish industry, software industry, paper industry, entertainment industry, semiconductor industry, cu... (read more)

Author: Larrie Kon's

3. Semiconductor Technology - Assumptions Behind Numerous Kinds
November 04, 2009

Semiconductors will not function unless they possess electrical conductivity. The function takes place in the conductor's linkage with the insulator. This is perhaps the most fundamental among a list of principles behind semiconductor technology. But since this is very basic, there are yet other assumptions to take note of. In this regard, it pays to take a peek at the semiconductor kinds that are crucial in some businesses.Basically, semiconductors have very crucial roles in the fields of modern electronics since they are almost always present in computer, mobile phone and radio cre... (read more)

Author: Agustin Steele

4. How to Replace a CMOS Battery
October 27, 2009

How to Replace a CMOS Battery All desktop and laptop Battery 4 US computers use a special battery called a Complementary Metal Oxide Semiconductor (CMOS) battery which stores information about your computer, such as the date and time, when the machine is powered off. Normally the Laptop battery re-charges itself whenever the computer is turned on but if it stops working or becomes damaged you will need to replace it manually. Unplug the power cord from the power supply on the back of your computer. Remove all of the extra cables for the mouse, keyboard, monitor, printer and ... (read more)

Author: Jack Smith

5. Electronics Engineering : A vast scope for students
October 26, 2009

Electronics Engineering is a wing of engineering that deals with the effects and behaviour of electrons to develop system, device, components or equipment for transistors, integrated circuits, that use electricity as driving force. It also includes instrumentation engineering , telecommunication, semiconductor circuit design and power and others. Electronics engineers work with small power devices like fiber optics, micro processors. electromagnetic energy is used by Microwave engineers, in forms such as radio light or waves to produce radar, fiber optics systems and communications,.sign... (read more)

Author: Adarsh Sharma

6. The Success Of The Electronic Components And Semiconductors Manufacturing Industries In USA
October 14, 2009

The United States of America has the largest number of the electronic components and semiconductor manufacturing industrial units in the world. There are more than five thousand companies in the country with total combined annual revenue of about 150 Billion US Dollars every year. Micron Technology, Intel, Advanced Micro Devices (AMD) and the Texas Instruments are the largest industries to be reckoned with, in the world. The electronic components and semiconductor manufacturing industry has become very concentrated in the USA and the largest fifty companies generate more than 70 percent of the... (read more)

Author: mad scan

7. Transportation Dispatch Software - Bringing A New Edge To Your Business
October 08, 2009

Technology has undergone tremendous change in the recent past. The work has become easier because most of the work that we had to do manually is now easily done by software and machines. When we talk about the improvement or development in various aspects, let’s not forget some important advancement like the semiconductor development, development in transportation dispatch software etc. The transportation dispatch software has significantly evolved in the last few years and has contributed in the enhancement of the functioning of freight transportation system. For a smooth business opera... (read more)

Author: john mak

8. Samsung Has Two New Great Phones
October 01, 2009

Samsung is a corporation that is connected with various industries ranging from electronics to ship building and is one of the principal memory chip, semiconductor, television and LCD fabricators across the world. It has production sites in numerous countries throughout the globe, including America and Germany. Samsung launched its separate electronics groups in 1969 and in spite of its victory in a lot of these areas, Samsung continues to remain famous for its mobile phones, household appliances and laptops. The corporation attained a favorable reputation in the worldwide cellular phone ... (read more)

Author: Andrew Carter

9. Earnings Preview for Sep 8 - 11
September 10, 2009

It's a relatively quiet week on the earnings front with only 50 companies scheduled to report, including a smattering of retailers and food companies. Only 2 S&P 500 members are on tap to report including Campbell Soup Co. (CPB) and National Semiconductor (NSM). The economic calendar is also quiet to start the first "real" trading week in September, as Wall Street comes back from August vacations. It's a shortened trading week due to the Labor Day holiday on Monday. * Monday: Markets closed for Labor Day * Tuesday: ICSC-Goldman Store Sales, Redbook * Wednesday: Beige Book ... (read more)

Author: Tracey Ryniec

10. Rear Projection Television and DLP Technology
September 10, 2009

Are you looking for a big screen TV with a not so expensive price tag? Then, a rear projection TV is one option you should consider. When it comes to combining low price and high performance, rear projector TVs are the best. Though there are several projection technologies in use, Digital Light Processing (DLP) projector technology is the most popular one. Advantages of DLP Technology DLP technology, originally developed by Texas Instruments, incorporates an optical semiconductor called the DLP chip. With this you can expect superb black level performance and deep saturated colors apart fro... (read more)

Author: Bulb Mbs

11. New lasers drive powerful applications
September 02, 2009

Telecoms, healthcare and display technology will be the major beneficiaries of a new generation of semiconductor lasers developed in a massive European research effort. Better cancer treatment, wider bandwidth and smaller, better displays could be on their way. The Brighter project, which is co-funded by the European Union, has set a series of world firsts in lab-based records for semiconductor lasers in the red, infrared and green spectra. These results will not languish on the testing bench. The Brighter project began its work with three, hugely important applications already in its sig... (read more)

Author: Shane Ennerson

12. Amba trading company is a authorized Importer, dealer and supplier of RF transistors for broadcasti
September 02, 2009

Amba trading company is a authorized Importer, dealer and supplier of RF transistors for broadcasting located in Delhi, India. We are authorized dealer of premium brands of RF transistors, Air traffic control products & spares, Electron tubes and valves, RF microwave semiconductor & spares in Delhi. UKC Ltd (UK) Manufacturing - RF Transistors & Diodes Chelmer valve Company Ltd.(U.K) Manufacturing - Electron tubes & Valves For industrial & Broadcast Applications. We are in deal sale of RF transistors for broadcasting since 1976. Our Products are : 1.(i) RF transistors TP9383... (read more)

Author: Raj singh

13. Quantum Dots Broadening the Horizons of Biological Testing
August 31, 2009

Quantum Dots Broadening the Horizons of Biological Testing During biological testing, it is often necessary to track substances to view where they are traveling in the biological organism. Traditionally, organic dyes were used for these purposes. Yet, as time goes on and demands have arisen, dyes have been going by the wayside. Replacing them are quantum dots. Greater brightness and photostability are key benefits Quantum dots offer a variety of benefits over organic dyes. First, quantum dots are much brighter than organic dyes. This makes it a lot easier to differentiate where ... (read more)

Author: William Hauselburg

14. Quantum Dots Enjoy the Glow of a Bright Future
August 31, 2009

Quantum Dots Enjoy the Glow of a Bright Future Quantum Dot’s Flexability Make them Useful in a Number of Areas Many people have never heard of quantum dots, but they are an increasingly important part of nanotechnology. Quantum dots nanotechnology are approximately 5.5 to 6.5 nanometers in diameter. Nanometers are very small; equivalent to 1/1,000,000,000th of a meter. Though small, quantum dots are making a big difference in a number of areas including medicine, lighting, and solar energy. Quantum Dots in Medical Technology Quantum dots are being used in medical technology to ... (read more)

Author: William Hauselburg

15. Touch screen Supply Chain
August 31, 2009

Executive Summary This white paper provides an overview of the touchscreen supply chain. It describes the key components of the supply chain and the touchscreen modules available in the market. Introduction A detailed understanding of the capacitive touchscreen supply chain is vital for customers considering touchscreen end products. The engagement model chosen should match the in-house design capabilities, component supplier value added services, and available options for module design and supply. Controller IC Supplier The capacitive touchscreen controller is a semiconductor... (read more)

Author: Cypress Semi

16. IGBT: insulated gate bipolar transistor
August 26, 2009

Known as IGBT or insulated gate bipolar transistors, it is a 3 terminal power semiconductor system known for its fast switching and high efficiency capabilities. The device is used for switching power in most of the modern appliances of today like stereo systems, air conditioners, speed refrigerators and electric cars with the help of switching amplifiers. The device has been designed for rapid on and off features thus, the amplifiers which use it come along complex waveforms, low pas filters and width pulse modulation. The device is used for combining low saturation and high current vol... (read more)

Author: jessi longevity

17. Research Report on the LED industry of China and the World from 2009 to 2010
August 12, 2009

www.shcri.com- In the 1950s, RCA first found the infrared radiation of gallium arsenide in other semiconductor alloys. LED is a luminescence component made of semiconductor materials. The component has two electrode terminals. Voltage is applied between the terminals and electricity is switched on. And after the combination of electricity and hole, the remaining power is released in form of light. Different materials have different wavelengths and thus send out lights of various colors. This is the basic lighting theory of LED. LED can only be applied in diodes that can send out visible ligh... (read more)

Author: Kerry Zhao

18. THE HISTORY OF NORTH ALLOYS
August 06, 2009

NORTH ALLOYS is a leading manufacturer of metals and alloys in China. During past over twenty years' history, we have been devoted to continuous innovation and improvement of our technology to deliver what our customer really desires. Our products serve a wide range of industries, including aerospace, architecture and construction, petrochemical, marine, military, medical, electronics, semiconductor, chemical processing and many others. NORTH ALLOYS is committed to provide high quality products with competitive prices to our customers around the world. Our reliable services and effi... (read more)

Author: ANDREW XU

19. Automotive Human Machine Interfaces (HMI) Redefined
August 06, 2009

Human Machine Interfaces, or HMIs, traditionally consist of multiple systems which allow drivers to interact with their vehicle. In today's automotive designs, the HMI also displays any feedback from the vehicle to the driver. This interaction begins the instant one unlocks the car door, continues while driving, and ends the moment the driver gets out and locks the car. It involves the optimal balance of the driver's sensory inputs to make the driving experience both safe and enjoyable. Some of the more commonly recognized HMI system modules for enhancing the driver's experience are keyless en... (read more)

Author: Cypress Semi

20. Mindspeed Extends their Best VOIP Solutions to Wider Platforms
August 03, 2009

New technologies are emerging everywhere. The demand for new and creative technologies is propelling companies to produce dynamic and reliable products and services. The same goes in for the VOIP industries. Recently Mindspeed the leading supplier for semiconductor solutions announced 2 new devices for their best VOIP processors Comcerto 300. How will these Two Devices Help the Companies The Comcerto 300 Series was launched in January 2008. Since then these devices gained a lot of popularity amongst the customers in the VOIP market. A majority of the designs offered by these devices ... (read more)

Author: devika pathare

21. Is Your Company Dental Plan Cost A Small Fortune?
August 03, 2009

When I was working in the Semiconductor Industry, as an engineer, I was paying big dollars for my health care. I finally decided to quit my health plan, since I had not used it for 10 years. I was paying around $250 per month and this included a dental plan. This only included me and one other family member. The problem with this health plan was every year at renewal time the company would change to a different provider and the cost would go up and the services would go down. I recently found a membership that made sense to me related to dental insurance. Even though I am now on Medica... (read more)

Author: Rudy Silva

22. Designing USB Applications with PSoC
July 31, 2009

Design engineers have long been familiar with USB, first introduced in 1995 to replace the aging RS232 interface. It represents a simple, elegant means of communicating with as many as 126 connected devices using a well-defined protocol. However, adding USB to an existing product is not necessarily simple or elegant, and adding it to new projects adds a degree of complexity that may now be largely avoidable. Cypress Semiconductor’s CY8C24794-24LFXI is a member of its popular Programmable System-on-Chip (PSoC) family of mixed-signal arrays. The 24794 includes a full-speed (12 Mbps) USB 2.0 S... (read more)

Author: Cypress Semi

23. Multi-Touch All-Point Touchscreens: The Future of User Interface Design
July 30, 2009

One of the most demanding challenges designers of electronics – especially consumer electronics – face involves user interface design. Interface design requires careful mapping of complex user actions to create an intuitive, usable, and productive experience. Users, with all of their senses – sight, hearing, taste, smell, and touch – sit on one side of this paradigm. On the other side is the device or system that is affected by the output of the user’s five senses. The holy grail for both users and developers is a user interface that most effectively and intuitively leverages the most relevan... (read more)

Author: Cypress Semi

24. DIY Solar Power
July 24, 2009

DIY Solar Power Professional solar panels and power systems cost more than $3.000 minus the installation charge! Here is a solution! You can build one yourself cheap! You can easily build a solar panel system for less than $200 using low cost supplies. A solar cell or photovoltaic cell is a device that converts sunlight directly into electricity by the photovoltaic effect. Solar photovoltaic has an essential role in the operation of Solar Power Systems. It is the main system component which converts sunlight into electricity. When the semiconductor material in a solar module comes i... (read more)

Author: Phillip Bates

25. A Look at Modern CPU Fabrication
July 20, 2009

In the heady days of the first computers, vacuum tubes were the driving force behind calculations by virtue of their switching function. This was all overturned with the coming of the transistor, an invention which was officially pioneered in AT & T's Bell Labs in 1947. The transistor was a revolution because of the manufacture process and the base material, silicon, which is globally abundant and therefore cheaper to manufacture. Silicon is a semiconductor, capable of either allowing current to pass through it or halting its progress. The properties of a solid-state silicon transistor a... (read more)

Author: Sandra Prior

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