File:Audion applications Electrical Experimenter Feb 1920 pg1001.png

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English: Cartoon panel from 1920 in Hugo Gernsback's magazine Electrical Experimenter illustrating the many applications of the Audion (triode) vacuum tube invented in 1907 by Lee De Forest. The Audion was the first device that was able to amplify and founded the field of electronics. The drawings constitute a good inventory of the early accomplishments of the new technology.
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Source Retrieved October 28, 2014 from H. Winfield Secor, "The Versatile Audion" in Electrical Experimenter magazine, Vol. 7, No. 10, February 1920, p. 1001 on American Radio History website
Author Unknown authorUnknown author

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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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current00:29, 31 October 2014Thumbnail for version as of 00:29, 31 October 2014739 × 1,040 (349 KB)Chetvorno (talk | contribs)User created page with UploadWizard

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