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Electronic Valve - Osram, Triode, Type DE3, circa 1925 Object Reg. No: ST 022540

Dull emitting general purpose triode. Released in 1924. Manufacturer: M.O. Valve Company, England.
Early type of triode employing cylindrical electrode structure.
2.8 volt directly heated cathode. Filament rating is 2.4 to 3.0 volt. Filament current is 0.06 amp. Amplication factor is 7.
Cylindrical bulb on 4 pin European style base with metal shell. Bulb is broken with parts missing.
Acquisition Information:
Donation from J. Du Faur, 1947
Discipline: Technology
Dimensions: 98 mm (Length), 31 mm (Diameter)

More information

Tagged with: thermionic electron valves
Themes this item is part of: Engineering Collection, Information & Communication Collection
Primary Classification: ELECTRONICS
Secondary Classification: Vacuum Technology
Tertiary Classification: amplification
Inscriptions: Base: DE3/Fil. Volts 2.4-3/Fil.amps0.06/(test mark)
Manufacturer: M. O. Valve Company, England, Great Britain, circa 1925

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