Culture · Geography · Health · History · Mathematics · Natural sciences · Philosophy · Religion · Society · Technology    The Electronics Portal Persons with pacemakers prohibited 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 Gustav Robert Kirchhoff (March 12, 1824 – October 17, 1887) was a German physicist who contributed to the fundamental understanding of electrical circuits, spectroscopy, and the emission of black-body radiation by heated objects. He coined the term "black body" radiation in 1862, and two sets of independent concepts in both circuit theory and thermal emission are named "Kirchhoff's laws" after him. Kirchhoff formulated his circuit laws, which are now ubiquitous in electrical engineering, in 1845, while still a student. He proposed his law of thermal radiation in 1859, and gave a proof in 1861. Biography archive/Nominations... Switch selections    Selected design Credit: commons:User:Alejo2083 Instrumentation amplifier op-amp circuit. Design archive/Nominations...    Selected picture Credit: Tony R. Kuphaldt, User:Dna-webmaster Lissajous figures on an oscilloscope (90 degrees phase shift). Picture archive/Nominations...    News 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... January 30, 2007 A Sea Launch Zenit 3SL rocket has exploded on its Ocean Odyssey launch pad, just seconds before it was scheduled to launch. The engine had just been started when the rocket appeared to fall downwards, and was engulfed in a fireball. More... January 30, 2007 The primary camera on the Hubble Space Telescope has shut down and is likely to only be restored to partial functionality, according to reports from NASA. More... Archive...    Main topics Electronics - 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 Companies: AMD - Apple - Bose - Canon - Cray - Dell - Fujitsu - Garmin - HP - IBM - Intel - JVC - Kyocera - LG - Microsoft - NEC - Nintendo - Philips - Pioneer - RadioShack - Samsung - Siemens - Sirius - Sony - Texas Instruments - Xerox People: Ampère - Becquerel - Bell - Coulomb - Edison - Einstein - Faraday - Gauss - Geiger - Hall - Henry - Hertz - Joule - Kirchhoff - Marconi - Moore - Ohm - Ørsted - Planck - Siemens - Tesla - Volta - Watt - Weber    Related portals Technology Engineering Science Energy IT Electromagnetism Robotics Television Radio    Consumer showcase An automated external defibrillator (AED) is a portable electronic device that diagnoses and treats cardiac arrest by re-establishing an effective heart rhythm. This treatment is called defibrillation, which applies an electric shock to the entire heart muscle, uniformly clearing the electrical activity of the heart, hopefully allowing it to resynchronize. Defibtech, Cardiac Science, Philips (Heartstart), Zoll and Physio-Control cater specifically to this market. Product archive/Nominations...    Selected article A LASER (acronym for Light Amplification by Stimulated Emission of Radiation) is an optical source that emits photons in a coherent beam. The term has since entered the English language as a standard word, laser, losing the capitalization in the process. The back-formed verb lase means "to produce laser light" or "to apply laser light to". Laser light is typically near-monochromatic, i.e., consisting of a single wavelength or color, and emitted in a narrow beam. This contrasts with common light sources, such as the incandescent light bulb, which emit incoherent photons in almost all directions, usually over a wide spectrum of wavelengths. Laser action is explained by the theories of quantum mechanics and thermodynamics. Many materials have been found to have the required characteristics to form the laser gain medium needed to power a laser, and these have led to the invention of many types of lasers with different characteristics suitable for different applications. Article archive/Nominations...    Categories − Electronics + Avionics + Electronics books + Electronic circuits + Electronics companies + Electrical components + Consumer electronics + Digital technology + Electronic engineering + Electronic waste + Electronics lists + Electronics work tools + Embedded systems + Electronic hardware + Electronics manufacturing + Microwave technology + Molecular electronics + Nanoelectronics + Optoelectronics + Power electronics + Quantum electronics + Semiconductor technology + Electronics and society + Spintronics + Electronics standards + Telecommunications + Terahertz technology + Electronics terms + Electronic test equipment + Electronic warfare + Electronics stubs    WikiProjects Technology Science Physics Electronics Computing Energy    Associated Wikimedia Technology on Wikinews     Technology on Wikiquote     Electronics on Wikibooks     Electronics on Wikisource     Electronics on Wiktionary     Electronics on Commons News Quotations Manuals & Texts Texts Definitions Images What are portals? | List of portals | Featured portals