A Gramme machine, Gramme ring, Gramme magneto, or Gramme dynamo is an electrical generator that produces direct current, named for its Belgian inventor, Zénobe Gramme, and was built as either a dynamo or a magneto.[1] It was the first generator to produce power on a commercial scale for industry. Inspired by a machine invented by Antonio Pacinotti in 1860, Gramme was the developer of a new induced rotor in form of a wire-wrapped ring (Gramme ring) and demonstrated this apparatus to the Academy of Sciences in Paris in 1871. Although popular in 19th century electrical machines, the Gramme winding principle is no longer used since it makes inefficient use of the conductors. The portion of the winding on the interior of the ring cuts no flux and does not contribute to energy conversion in the machine. The winding requires twice the number of turns and twice the number of commutator bars as an equivalent drum-wound armature.[2]
^Thompson, Sylvanus P. (1888), Dynamo-electric machinery: a manual for students of electrotechnics. London: E. & F.N. Spon. p. 140.
^Fink, Donald G. and H. Wayne Beaty (2007), Standard Handbook for Electrical Engineers, Fifteenth Edition. McGraw Hill. Section 8, page 5. ISBN 978-0-07-144146-9.
A Grammemachine, Gramme ring, Gramme magneto, or Gramme dynamo is an electrical generator that produces direct current, named for its Belgian inventor...
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centimetre of water, equal to 1/1000 of a grave. In the decree of 1795, the term gramme thus replaced gravet, and kilogramme replaced grave. The French spelling...
some chemical research. 1873: Zénobe Gramme invents the first commercial electrical generator, the Grammemachine. 1874: Gustave Trouvé invents the first...
French electrical engineer who worked with Zénobe Gramme on the development of the Grammemachine (the first industrially viable electrical generator)...
first Cathkin Park, with press reports suggesting the lighting from a Grammemachine was not successful in illuminating the whole field. Subsequent tests...
Nobel Prize in Physiology or Medicine (1919) Zénobe Gramme (1826–1901), inventor of the Grammemachine Marc Lacroix (born 1952), biochemist and cancer researcher...
that doubled as vessels bridged by damp asbestos. Zénobe Gramme invented the Grammemachine in 1869, making electrolysis a cheap method for hydrogen production...
1866. The first practical generator, the Grammemachine, was made by Z.T. Gramme, who sold many of these machines in the 1870s. British engineer R.E.B. Crompton...
engineer and businessman (d. 1868) 1826 – Zénobe Gramme, Belgian engineer, invented the Grammemachine (d. 1901) 1829 – Owen Suffolk, Australian bushranger...
reversibility of the dynamo electric machine (variously attributed to Walenn 1860; Pacinotti 1864; Fontaine, Gramme 1873; Deprez 1881, and others) whereby...
of Wheels" is built on a Bagger 288. List of largest machines "Garzweiler: Bagger 288". Gramme, Helmo; Benoit Michel (2014). "Cours Extreme Engineering"...
Gutenberg project, and The Hawkins Electrical Guide Online at the Wayback Machine (archived March 21, 2015), many of these older public domain books are...
which melts at the same pace. The first candles were powered by a Grammemachine. The drawback of using direct current was that one of the rods would...
English painter and critic (b. 1819) 1901 – Zénobe Gramme, Belgian engineer, invented the Grammemachine (b. 1826) 1907 – Agnes Mary Clerke, Irish astronomer...
working for the British Electric Light Company. In 1881, he designed a Grammemachine which could power 4 to 6 arc lights of 4000 nominal candle power per...
On larger machines the constant magnetic field is provided by one or more electromagnets, which are usually called field coils. Zénobe Gramme reinvented...
He did extensive research on the function of levers. He used atwood's machine to demonstrate classical mechanics. He theorized that static electricity...
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student George Sylvanus Moler built a dynamo which was similar to the Grammemachine. He installed this generator in the basement of McGraw Hall, from which...
developments by Zénobe Gramme who, in 1871, reinvented Pacinotti's design and adopted some solutions by Werner Siemens. A benefit to DC machines came from the...
light idea into a complete system of electric lighting powered by Zénobe Gramme direct current dynamos fitted with an inverter to supply single-phase alternating...
condenser – Thomas D. Graham Graham cracker – Rev Sylvester Graham Gramme dynamo – Zénobe Gramme Gregorian telescope – James Gregory Guillotine – Joseph-Ignace...
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