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Electronic Valve - Cunningham, Triode, Type C 301, circa 1921 Reg. No: ST 028670
- 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.
- Four pin base.
- Acquisition Information:
- Donation from G. Williams, 1973
|Dimensions:||110 mm (Length), 46 mm (Diameter)|
|Tagged with:||thermionic electron valves|
|Themes this item is part of:||Engineering Collection, Information & Communication Collection|
|Secondary Classification:||Vacuum Technology|
|Tertiary Classification:||general purpose|
|Inscriptions:||GE trade mark on bulb.
On base: CUNNINGHAM AMPLIFIER/MODEL C-301
|Manufactured For:||E. T. Cunningham, United States of America, circa 1921
Manfactured by General Electric for RCA
|References:||For details of Cunningham Factory, please see Tyne, 'Saga of the Vacuum Tube'.|