Summary
C-301 triode, branded by Cunningham, America in about 1921.
It was a general purpose valve.
Directly heated cathode. 5 Volt filament at 1 amp. Anode Votage 90 Volts.
Physical Description
Four pin base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from G. H. Williams, 12 Jun 1973
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Manufactured For
E. T. Cunningham, United States of America, circa 1921
Manfactured by General Electric for RCA -
Inscriptions
GE trade mark on bulb. On base: CUNNINGHAM AMPLIFIER/MODEL C-301
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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
110 mm (Length), 46 mm (Outside Diameter)
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References
For details of Cunningham Factory, please see Tyne, 'Saga of the Vacuum Tube'.
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Keywords