File:Diode 1.jpg

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Diode_1.jpg ‎(125 × 269 pixels, file size: 9 KB, MIME type: image/jpeg)

John Fleming's valve or diode (1904) allowed electrical current to flow in one direction only. Courtesy: Science Museum/Science & Society Picture Library.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	16:30, 9 September 2008		125 × 269 (9 KB)	EMW (talk \| contribs)	John Fleming's valve or diode (1904) allowed electrical current to flow in one direction only. Courtesy: Science Museum/Science & Society Picture Library.

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