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Modern%20Steam%20Turbine%20Generator.jpg

In electricity generation, an electrical generator is a device that converts mechanical energy to electrical energy, generally using electromagnetic induction. The reverse conversion of electrical energy into mechanical energy is done by a motor; motors and generators have many similarities. A generator forces electric charges to move through an external electrical circuit, but it does not create electricity or charge, which is already present in the wire of its windings. It is somewhat analogous to a water pump, which creates a flow of water but does not create the water inside. The source of mechanical energy may be a reciprocating or turbine steam engine, water falling through a turbine or waterwheel, an internal combustion engine, a wind turbine, a hand crank, compressed air or any other source of mechanical energy.

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Wikipedia About Generators

Modern%20Steam%20Turbine%20Generator.jpg

In electricity generation, an electrical generator is a device that converts mechanical energy to electrical energy, generally using electromagnetic induction. The reverse conversion of electrical energy into mechanical energy is done by a motor; motors and generators have many similarities. A generator forces electric charges to move through an external electrical circuit, but it does not create electricity or charge, which is already present in the wire of its windings. It is somewhat analogous to a water pump, which creates a flow of water but does not create the water inside. The source of mechanical energy may be a reciprocating or turbine steam engine, water falling through a turbine or waterwheel, an internal combustion engine, a wind turbine, a hand crank, compressed air or any other source of mechanical energy.

Gorskii%2004414u.jpg

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Historic developments

Before the connection between magnetism and electricity was discovered, electrostatic generators were invented that used electrostatic principles. These generated very high voltages and low currents. They operated by using moving electrically charged belts, plates and disks to carry charge to a high potential electrode. The charge was generated using either of two mechanisms:

  • Electrostatic induction
  • The triboelectric effect, where the contact between two insulators leaves them charged.

Because of their inefficiency and the difficulty of insulating machines producing very high voltages, electrostatic generators had low power ratings and were never used for generation of commercially-significant quantities of electric power. The Wimshurst machine and Van de Graaff generator are examples of these machines that have survived.

Jedlik's dynamo

main: Jedlik's dynamo

In 1827, Hungarian Anyos Jedlik started experimenting with electromagnetic rotating devices which he called electromagnetic self-rotors. In the prototype of the single-pole electric starter (finished between 1852 and 1854) both the stationary and the revolving parts were electromagnetic. He formulated the concept of the dynamo at least 6 years before Siemens and Wheatstone but didn't patent it as he thought he wasn't the first to realize this. In essence the concept is that instead of permanent magnets, two electromagnets opposite to each other induce the magnetic field around the rotor. Jedlik's invention was decades ahead of its time.Fact: date=May 2009

Faraday's disk

Faraday%20disk%20generator.jpg

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News about Generators

Sen. Schumer Asks For Probe Into Cell-Phone Scam

WCBS-TV New YorkSen. Charles Schumer is asking for an investigation into the scam phone calls pitching bogus car warranties that many Americans receive several times a day. He says the scam artists are using random call generators allowing them to call people who are on the "do not call" list. The calls feature a recorded voice saying that the warranty on your vehicle "is about to expire" -- whether you own a ...http://wcbstv.com/local/schumer.scam.investigation.2.1006083...

Planet Ark

Planet ArkMADRID - Spain plans to change rules on state aid for renewable energy generators, an industry ministry spokesman said on Friday, arousing fears in the sector that its lucrative subsidies may shrink.http://planetark.org/enviro-news/item/52799

Best Cities For Jobs

ForbesIn hard times, metropolitan areas in Texas and college towns hold out the best opportunities for employment.http://www.forbes.com/2009/04/14/best-cities-for-jobs-opinio...

Schumer Wants Probe into Cell-Phone Spam

FOX 5 New YorkSen. Charles Schumer is asking for an investigation into the spam phone calls pitching bogus car warranties that many Americans receive several times a day. He says the scam artists are using random call generators allowing them to call people who are on the "do not call" list.http://www.myfoxny.com/dpp/news/local_news/nyc/090510_Schume...

West Australia to Raise Power Prices, Build Plants (Update1)

BloombergMay 11 (Bloomberg) -- Western Australia will raise power prices by 25 percent and commission projects that add 440 megawatts into the state’s electricity grid by late 2011, Premier Colin Barnett said.http://www.bloomberg.com/apps/news?pid=20601072&sid=aU1jVOcd...

News about Generators

Va. offers hurricane

WAVY News 10During the weeklong holiday, state and local sales taxes won't be collected on generators costing $1,000 or less, or on nearly two dozen other items ranging from flashlights to duct tape. The Atlantic hurricane season begins June 1. The Virginia ... http://www.wavy.com/dpp/news/local_news/va_ap_hurricane_sale...

Engineering work going Underground

Bucks Free PressLondon Underground has said super-silenced generators will be used to quieten the equipment used, adding there should not be any prolonged noise in any area. Work will be carried out between 1.30am and 4.30am. Anyone with queries about the work can ... http://www.bucksfreepress.co.uk/news/4359922.Engineering_wor...

W2 Energy Acquires Solar Technology

Market WireW2 Solar uses SunCatcher brand solar collectors, heat exchangers and steam generators, and Steam Ray brand rotary steam engines, to generate steam, process heat and electricity from solar energy. About W2 Energy W2 Energy trades in the United States ... http://www.marketwire.com/press-release/W2-Energy-Inc-987544...

NY's Schumer Asks for Probe into Phone Spam

WSAWNEW YORK (AP) -- A New York senator is asking for an investigation into the spam phone calls pitching bogus car warranties that many Americans receive several times a day. Sen. Charles Schumer says the scam artists are using random call generators ... http://www.wsaw.com/home/headlines/44705507.html

Nevada Legislature debates renewable energy bills

Reno GazetteNVEnergy wants to avoid requirements that it purchase 2 percent of its power from small-scale renewable energy generators on small businesses and homes, worried that it would be forced to build out such a distributive generation system if there isn ... http://www.rgj.com/article/20090511/NEWS18/90511005&OAS_site...

Search results for Generators

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GUARDIAN Automatic Standby Generators

Guardian – the #1 selling standby generator ... Guardian standby generators offer peace of mind, security and convenience during power outages.http://www.guardiangenerators.com/

Generators

Reviews of generators, back-up power systems and portable generators.http://generatorfacts.com

Wikipedia results for Generators

Electrical generator - Wikipedia, the free encyclopedia

In electricity generation, an electrical generator is a device that converts mechanical energy to electrical energy, generally using electromagnetic induction.http://en.wikipedia.org/wiki/Electrical_generator

Generator - Wikipedia, the free encyclopedia

The Generators, a punk rock band formed in Los Angeles in 1997 by members of the defunct Warner Bros. band Schleprock; Kix (band), an American glam metal band also known as the ... http://en.wikipedia.org/wiki/Generator

Pseudorandom number generator - Wikipedia, the free encyclopedia

crng: Random-number generators (RNGs) implemented as Python extension types coded in C. http://eeyore.wu-wien.ac.at/src/ prng: A collection of algorithms for generating pseudorandom ... http://en.wikipedia.org/wiki/Pseudorandom_number_generators

Vortex generator - Wikipedia, the free encyclopedia

A vortex generator is an aerodynamic surface, consisting of a small vane that creates a vortex. [1] [2] Vortex generators can be found on many devices, but the term is most often ... http://en.wikipedia.org/wiki/Vortex_generators

Signal generator - Wikipedia, the free encyclopedia

There are many different types of signal generators, with different purposes and applications (and at varying levels of expense); in general, no device is suitable for all possible ... http://en.wikipedia.org/wiki/Signal_generators
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Generators kill three

Generators kill three3 people are dead after carbon monoxide leaked from their generators and poisoned their homes. WDRB's Chris Turner reports.Windows Media - Video

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Hydrogen Generator, 2.0 Liter Per MinuteShows a flat plate hydrogen generator seperated by zip ties for spacing, 1 spoon of baking soda per gallon producing 2 liters per minute.Flash - Video

Answers for Generators

james tGenerators?james tit won,t put out the voltage to run your houseJohn SHow do I make my own wind power generators?John SI make my 2 wind power generators at home and you will need a generator, blades battery and inverter. I use them to power my lighting along my balcony. Actually I got the infomation from http:...Lemuel PWhat are the different types of Generators used to produce electrical power?Lemuel P1. The Famous electrostatic generators are friction machines a) Holtz, and Wimshurst generators b) Van de Graaff generators For a few more(see ref below) 2. Faraday disk 3. Dynamo 4. Alterna...david mHow do you connect 2 basic generators together in series, to power a house?david mI could give you a lot of techno speak to tell you why, but the bottom line is that it is totally impractical to wire them together. You can not syncronize them and that is manditory if they are conne...charlotte_j27How are electric generators and electric motors similar?charlotte_j27b
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