Summary
H125A triode.General purpose triode selected for good high frequency performance. 1 volt directly heated cathode, manufactured by Standard Telephones & Cables Ltd., England, circa 1928.
This valve is the same as the Western Electric 215A 'Peanut Tube'. The H prefix to the type number indicates that it has been selected for good high frequency performance. (A 'G' prefix indicates General purpose.) It was one of the smallest valves produced during the 1920s.
Physical Description
Base type: small American bayonet style (probably unique to this valve) No. of nubs in base: 4 Bulb shape: small cylindrical ('peanut' tube) Bulb material: glass
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, 13 Sep 1978
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Manufacturer
Standard Telephones & Cables Ltd., England, Great Britain, circa 1928
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Inscriptions
Bulb: Standard / H125A
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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
65 mm (Length), 16 mm (Outside Diameter)
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Keywords