Category:Early vacuum triodes
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Subcategories
This category has the following 3 subcategories, out of 3 total.
Media in category "Early vacuum triodes"
The following 11 files are in this category, out of 11 total.
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Early triode vacuum tube collection.jpg 1,476 × 1,526; 419 KB
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Early triode vacuum tubes.jpg 1,080 × 1,756; 409 KB
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German Museum of Technology, Berlin 2017 017.jpg 3,456 × 5,184; 10.26 MB
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Lieben-Reisz vacuum tube.jpg 460 × 1,416; 94 KB
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Marconi N triode.png 377 × 768; 73 KB
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McCulloch indirectly-heated vacuum tube 1925.jpg 272 × 821; 39 KB
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Paper Label used to ID Audio Tron.jpg 3,872 × 2,592; 2.55 MB
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Roehrentriode.Schott.M.1917.jpg 1,033 × 2,737; 900 KB
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Round radiotelephone set.jpg 1,728 × 1,128; 268 KB
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Western Electric VT-1 Triode Vacuum Tube.jpg 2,633 × 3,291; 6.16 MB