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File:RCA 24-A screen grid tube anode characteristics.png

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Summary

Description
English: Graph of anode (plate) characteristic curves of the RCA 24-A tetrode vacuum tube, one of the first tetrodes which came out in 1929. It shows the plate current (Ib) as a function of plate voltage for different values of control grid voltage (EC2). The lowest curve shows the screen grid current (IC2). This early tetrode illustrates the negative resistance "kink" in the plate current (labeled "values unstable") caused by secondary emission of electrons from the plate, that caused instability and parasitic oscillations in early tetrodes. Modern tetrodes have a coating on the plate which suppresses secondary emission, eliminating the "kink".
Date
Source Retrieved March 20, 2015 from RCA Tube Handbook HB-3, Vol. 5 & 6, Receiving Tube Section Part 3, Radio Corporation of America, Harrison NJ, 1953, p. 24-A on https://archive.org/
Author Unknown authorUnknown author
Permission
(Reusing this file)		 Creative Commons license: Public Domain Mark 1.0
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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.
United States
United States
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current00:14, 21 March 2015Thumbnail for version as of 00:14, 21 March 2015888 × 812 (33 KB)ChetvornoUser created page with UploadWizard

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