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Theory
An electric generator (Long ago, a machine that generated electricity was named "dynamo" today's preferred term is "generator".) is a device for converting mechanical energy into electrical energy. The process is based on the relationship betweenmagnetism and electricity. When a wire or any other electrically conductive material moves across a magnetic field, an electric current occurs in the wire. The large generators used by the electric utility industry have a stationary conductor. A magnet attached to the end of a rotating shaft is positioned inside a stationary conducting ring that is wrapped with a long, continuous piece of wire. When the magnet rotates, it induces a small electric current in each section of wire as it passes. Each section of wire constitutes a small, separate electric conductor. All the small currents of individual sections add up to one current of considerable size. This current is what is used for electric power.
An electric generator (Long ago, a machine that generated electricity was named "dynamo" today's preferred term is "generator".) is a device for converting mechanical energy into electrical energy. The process is based on the relationship betweenmagnetism and electricity. When a wire or any other electrically conductive material moves across a magnetic field, an electric current occurs in the wire. The large generators used by the electric utility industry have a stationary conductor. A magnet attached to the end of a rotating shaft is positioned inside a stationary conducting ring that is wrapped with a long, continuous piece of wire. When the magnet rotates, it induces a small electric current in each section of wire as it passes. Each section of wire constitutes a small, separate electric conductor. All the small currents of individual sections add up to one current of considerable size. This current is what is used for electric power.
An electric utility power station uses either a turbine, engine, water wheel, or other similar machine to drive an electric generator or a device that converts mechanical or chemical energy to electricity. Steam turbines, internal-combustion engines, gas combustion turbines, water turbines, and wind turbines are the most common methods to generate electricity. Continue...How Electricity is Generated
Timeline - Electronic Inventions
Timeline - important events in the history.
Understanding - Electric Generators
Electric generators - What it is - how is a transformer used - how it is generated - how are turbines used - how is it measured.
History
Long article on several inventors connected to the field and their inventions.
Electromagnet
An electromagnet is a device in which magnetism is produced by an electric current.
Magnetic Fields : History of ElectromagnetismUntil 1820, the only magnetism known was that of iron magnets and of "lodestones", natural magnets of iron-rich ore. It was believed that the inside of the Earth was magnetized in the same fashion, and scientists were greatly puzzled when they found that the direction of the compass needle at any place slowly shifted, decade by decade, suggesting a slow variation of the Earth's magnetic field.
Timeline - important events in the history.
Understanding - Electric Generators
Electric generators - What it is - how is a transformer used - how it is generated - how are turbines used - how is it measured.
History
Long article on several inventors connected to the field and their inventions.
Electromagnet
An electromagnet is a device in which magnetism is produced by an electric current.
Magnetic Fields : History of ElectromagnetismUntil 1820, the only magnetism known was that of iron magnets and of "lodestones", natural magnets of iron-rich ore. It was believed that the inside of the Earth was magnetized in the same fashion, and scientists were greatly puzzled when they found that the direction of the compass needle at any place slowly shifted, decade by decade, suggesting a slow variation of the Earth's magnetic field.
Electric Generator or Dynamo
Michael Faraday of England and American Joseph Henry separately built the first laboratory models of electric generator in 1832. Frenchmen, Hippolyte Pixii, France built a hand-driven model of an electric generator in 1833. American, Nikola Tesla built the first alternating-current generator in 1892.
Michael Faraday of England and American Joseph Henry separately built the first laboratory models of electric generator in 1832. Frenchmen, Hippolyte Pixii, France built a hand-driven model of an electric generator in 1833. American, Nikola Tesla built the first alternating-current generator in 1892.
Electronics
The history of electronics began to evolve separately from the history of electricity late in the 19th century. The English physicist J.J. Thomson identified the electron by and the American physicist Robert A. Millikan measured its electric charge in 1909.
The history of electronics began to evolve separately from the history of electricity late in the 19th century. The English physicist J.J. Thomson identified the electron by and the American physicist Robert A. Millikan measured its electric charge in 1909.
Famous Inventors Involved in the History of Electricity and Electronics
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