Portal:Electronics
The Electronics Portal
The field of electronics comprises the study and use of systems that operate by controlling the flow of electrons (or other charge carriers) in devices such as thermionic valves and semiconductors. The design and construction of electronic circuits to solve practical problems is an integral technique in the field of electronics engineering and is equally important in hardware design for computer engineering. All applications of electronics involve the transmission of either information or power. Most deal only with information.
Consumer electronics are electronic devices intended for everyday use by people. Consumer electronics usually find applications in entertainment, communications and office productivity. Consumer electronics are manufactured throughout the world, although there is a particularly high concentration of manufacturing activity in the Far East. One overriding characteristic of all consumer electronic products is the trend of ever-falling prices. This is driven by gains in manufacturing efficiency and automation, coupled with improvements in semiconductor design. Selected biography Sir Joseph John Thomson, OM, FRS (18 December 1856 – 30 August 1940) often known as J. J. Thomson, was an English physicist. Thomson is credited for the discovery of the electron, of isotopes, and the invention of the mass spectrometer. Thomson conducted a series of experiments with cathode ray tubes which led him to the discovery of electrons and subatomic particles. Selected design Credit: commons:User:Jjbeard A Wheatstone bridge. Selected picture Credit: commons:User:Peo The Hall effect for different directions of electric current and magnetic field. News November 19, 2008 The European Organization for Nuclear Research (CERN) said that repairing the Large Hadron Collider (LHC) will cost up to €16.6 million or US$21 million. More... April 30, 2008 HP Labs announces the creation of a Memristor, the fourth basic element of electronic circuits with the Resistor, Capacitor, and Inductor. More... December 4, 2007  On the third day of the 2007 Taipei IT Month in Taiwan yesterday, notebook computers and desktop computers built with AMD's Phenom processor and Intel Penryn processor openly battled for the consumer-market after each company launched their quad core processors. More... February 27, 2007 The new South Pole Telescope has recently collected its first light in a long-term project to learn about the nature of dark energy. More... Main topicsElectronics - Consumer electronics - Engineering - Manufacturing - Symbols - Terms - Units - Waste Theory: Ampère's law - Coulomb's law - Frequency - Hall effect - Joule's laws - Kirchhoff's laws - Millman's Theorem - Moore's Law - Norton's theorem - Ohm's law - Peukert's law - Resistance - Thévenin's theorem- Superposition - Wavelength Components: Antenna - Capacitor - Connectors - Diode - Fuse - Ground - Inductor - Integrated circuit - LCD - Magnetron - Phased array - Printed circuit board - Resistor - Thermocouple - Transformer - Transistor - Switch - Wire Circuits: AC - Bridge - Designs - Diagrams - DC - Impedance - Load - Series and parallel - Voltage divider - Voltage drop Fields: Avionics - Computer systems - Control systems - Electromechanics - Microelectronics - Military - Optoelectronics - Power - Quantum electronics - Radio - Robotics - Semiconductors - Spintronics - Telecommunications Products: Cameras - Computers - Fiber optics - Lasers - Lights - Mobile phones - Printed circuit board - Radios - TVs Related portalsConsumer showcase Dell Computer's Inspiron laptop brand is a range of computers targeted at the consumer market. Current models in the range include the E1501/1501, E1405/640m, E1505/6400 and, E1705/9400. Some Inspiron machines offered in the past have been modified to become a higher or lower quality machine. An example of this is the first-generation Inspiron XPS and Inspiron 9100 (2004). Both machines shared the same options, Dell marked the XPS as an "ultimate gaming machine", while marking the 9100 as a "desktop replacement". Selected article An electronic amplifier is a device for increasing the power of a signal. An idealized amplifier can be said to be "a piece of wire with gain", as the output is an exact replica of the input, but larger. It does this by taking power from a power supply and controlling the output to match the input signal shape but with a larger amplitude, in this sense an amplifier may be considered as modulating the output of the power supply. Real world amplifiers are not ideal and this control is thus imperfect. One consequence is that the power supply itself may influence the output, and must itself be considered when designing the amplifier. The amplifier circuit has an "open loop" performance, that can be described by various parameters. The majority of modern amplifiers apply some negative feedback to form a control loop surrounding the gain stage itself. CategoriesWikiProjects |
