Summary
De Forest Audion DV3 vacuum tube (apparently unused, original canister and instruction sheet.
The valve used for detection and amplification in dry battery powered radio receivers, made by De Forest In America, circa 1925.
The valve has a directly heated cathode with a filament voltage of 3V.
Physical Description
Isolantite (white) 4 pin UV style base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Purchase
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Manufacturer
De Forest Radio Company, Jersey City, New Jersey, United States of America, 1925
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Inscriptions
Tube Base stamped "10155". Marked "sold only for amateur and experimental use". Sticker on tube bulb: De Forest 3V dry cell Audion Paper test chit on tube: Tested by dealer - blank - Date - blank - In presence of - blank - Purchaser On base of tube: Patent marking1907 to 1923. On base: Isolantite bases mfg. for De Forest excl. Canister: De Forest Audion Dry Cell Type DV# Detector and Amplifier Sheet entitled: Instruction sheet for using
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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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Part Dimensions
85 mm (Length), 35 mm (Outside Diameter)
Dimensions of vacuum tube.
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Part Dimensions
142 mm (Length), 53 mm (Outside Diameter)
Dimesions of canister.
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Part Dimensions
370 mm (Length), 100 mm (Width)
Dimesions of data sheet.
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1977, 301 - 302 Pages
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Keywords
