Summary
General purpose triode, introduced in 1925 as part of the 'Wuncell' series; manufactured by A. C. Cossor Ltd. Highbury Grove, London, UK. Dull emitter with a filament temperature of 800 degrees C (as opposed to about 200 degrees C for a bright emitter). Designed to be operated from a single 2 volt accumulator. 1.8 - 2.0 V directly heated cathode.
Physical Description
Tubular bulb with top exhaust tip on 4 pin UV style base with metal shell, mounted on display block.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from P. H. McElroy, 22 Jul 1926
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Manufacturer
A.C. Cossor Ltd, Highbury Grove, London, England, Great Britain, circa 1925
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Inscriptions
Bulb: Cossor/WUNCELL/TYPE W1/FIL.1.8-2/A.20-80/(cossor logo) Display block: (text)
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Brand Names
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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
90 mm (Height), 35 mm (Outside Diameter)
Dimensions of valve, excluding display block.
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References
[Book] Stokes, John. 1982. 70 Years of Radio Tubes and Valves., 1982, 214 - 218 Pages
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Keywords