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English: Drawing of a Gramme dynamo, an electrical generator designed by Belgian inventor Zénobe Gramme in 1871. It was the first machine to be used industrially to generate power. His innovation was to use many armature windings (30 in this machine), wound on a doughnut shaped armature, and switched with a many segmented commutator, to smooth the output waveform, producing nearly constant DC power. This drawing shows a hand cranked model from the 1870s used widely in laboratories, text says it's output was equivalent to "eight ordinary Bunsen elements [batteries]". It used laminated permanent magnets invented by Jamin.
ದಿನಾಂಕ
ಆಕರ Downloaded 2007-12-21 from Hippolyte Fontaine (1878) Electric Lighting: A Practical Treatise, translated from French by Paget Higgs, E. & F.N. Spon, London, UK, p.86, fig.30 on Google Books. The drawing is signed 'Perot'.
ಕರ್ತೃ Hippolyte Fontaine
ಅನುಮತಿ
(ಈ ಕಡತವನ್ನು ಮರುಬಳಕೆ ಮಾಡಲಾಗುತ್ತಿದೆ)
Public domain - Fontaine died 1917
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ಪ್ರಸಕ್ತ೨೩:೪೮, ೨೭ ಜನವರಿ ೨೦೦೮೨೩:೪೮, ೨೭ ಜನವರಿ ೨೦೦೮ ವರೆಗಿನ ಆವೃತ್ತಿಯ ಕಿರುನೋಟ೬೫೮ × ೬೫೬ (೮೧ KB)Chetvorno{{Information |Description=Woodcut of Gramme Wikipedia:dynamo, designed by Zénobe Gramme around 1870. This is a model designed for use in laboratories. |Source=Downloaded 2007-12-21 from [http://books.google.com/books?id=c64OAAAAYAAJ&pg=PA86 Hipp

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