Summary
P2. Triode. Intended for high-frequency amplification. Manufacturer: A. C. Cossor Ltd. Highbury Grove, London, UK
Released in 1922. Distinguished from P1 released at same time by red top.
Filament 3.5 to 4 volts at 700 ma. Anode 60 to 80 volts. Plate resistance 40,000 ohms. Amplification factor 11.
Physical Description
Tubular glass bulb with top exhaust tip with 4 pin European style base with nickel plated shell. Top of bulb is painted red..
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Unknown Acquisition Method from Unknown Source
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Manufacturer
A.C. Cossor Ltd, Highbury Grove, London, England, Great Britain, circa 1922
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Inscriptions
Bulb: Cossor/(illegible)
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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
99 mm (Length), 31 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 375 Pages
[Book] Stokes, John. 1982. 70 Years of Radio Tubes and Valves., 1982, 216-217 Pages
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