Category:Fleming valves
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a vacuum tube used as a detector for early radio receivers | |||||
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Media in category "Fleming valves"
The following 8 files are in this category, out of 8 total.
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Commercial Fleming valves.jpg 1,218 × 543; 146 KB
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Fleming Valve - US Patent 803,684.jpg 1,567 × 2,626; 823 KB
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Fleming valve.jpg 255 × 222; 35 KB
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Fleming valves.jpg 1,956 × 1,204; 621 KB
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Group of Fleming valves 1904.jpg 1,031 × 440; 131 KB
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Marconi Valve Tuner.jpg 529 × 367; 42 KB
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Meissner radiotelephone transmitter.jpg 811 × 1,026; 90 KB
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Reception room in the 1920s with giant loops 25 years SFR.jpg 4,010 × 3,058; 2.19 MB
