Summary
De Forest Audion DV3 electronic valve, almost certainly a DV3. The valve was used for detection and amplification in dry battery powered radio receivers and made by De Forest In America, circa 1923. The valve has a directly heated cathode with a filament voltage of 3V.
Physical Description
4 pin bakelite base; the filament runs across the tube (horizontal elements).
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from L. Smith, 19 Jan 1971
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Manufacturer
De Forest Radio Company, Jersey City, New Jersey, United States of America, 1923
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Inscriptions
Base is stamped: De Forest Audion Patent markings stamped into base 1907 to 1922
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
85 mm (Length), 35 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1977
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Keywords
