Audion and Vacuum-Tube Receiver Development (1907-1916)

May 15th, 2015
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In 1906 Lee DeForest announced the development of the first three-element vacuum-tube detector in The Audion: A New Receiver for Wireless Telegraphy, from the Scientific American Supplement. The original Audion was capable of slightly amplifying received signals, but at this stage could not be used for more advanced applications, such as radio transmitters.

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Audion and Vacuum-Tube Receiver Development (1907-1916)LEE DEFOREST AND THE EARLY AUDIONSIn 1906 Lee DeForest announced the development of the first three-element vacuum-tube detector in The Audion: A New Receiver for Wireless Telegraphy, from the Scientific American Supplement. The original Audion was capable of slightly amplifying received signals, but at this stage could not be used for more advanced applications, such as radio transmitters. The inefficient design of the original Audion meant it was initially of little value to radio, and due to its high cost and short life it was ra

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