File:Pacinotti dynamo.jpg

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English: Drawing of Antonio Pacinotti's dynamo, an early electrical generator invented by Italian professor Antonio Pacinotti about 1860. It was first to use a doughnut shaped armature with many windings (16 in this machine) distributed evenly along its circumference to even out the output waveform, producing almost steady direct current. It was the inspiration for the Gramme dynamo, the first machine to produce power commercially for industry. This drawing is of a machine presented at the Paris Electrical Exhibition in 1867, from the caption: "Pacinotti machine at the Paris Electrical Exhibition". Alterations: removed caption and discoloration along bottom edge.
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来源 Downloaded from Heinrich Schellen (1884) Magneto-electric and Dynamo-electric Machines, 3rd Ed., Vol.1, D. Van Nostrand, New York, p.218, fig.124, translated by Nathaniel S. Keith and Percy Neyman, on Google Books.
作者 The drawing is signed with two marginally legible names: 'L. LEGEA'(?) and 'J(?) CARTERET'. I haven't been able to find any information on either.
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Public domain - published in USA before 1923

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Public domain
Public domain
这个媒体文件在美国属于公有领域。这适用于版权过期的美国作品,通常因为其首次出版于1929年1月1日之前,或即便当天或以后出版,其并未包含版权通告或获得版权回溯。查看这个页面可以获取到更多的解释。

United States
United States
这个图片在美国以外可能尚未处于公有领域;尤其在对美国作品不适用较短期限法则的国家和地区,如加拿大、中国大陆(不含香港及澳门)、德国、墨西哥和瑞士。创作者和发表年份是关键信息,因此必须提供。参见维基百科:公有领域维基百科:版权信息以获取更多细节。

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当前2008年1月27日 (日) 21:202008年1月27日 (日) 21:20版本的缩略图1,295 × 839(184 KB)Chetvorno留言 | 贡献{{Information |Description=Woodcut of Pacinotti dynamo, an early electrical generator invented by Italian professor Antonio Pacinotti about 1860. It was first to use a doughnut shaped armature with many windings along it's length to even out the output wa

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