Summary
Diode used as half wave rectifier. Usually used in a pair as a full wave rectifier in audio amplifiers and radios.
Manufacturer: Westinghouse, USA. Manufactured for: RCA who branded them Cunningham for sale by E. T. Cunningham Inc. When branded RCA, this valve is called a UX-281.
7.5 V directly heated cathode.
Physical Description
Conical bulb on 4 pin UX style base
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from I. E. Morton, 10 Mar 1972
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Manufacturer
Westinghouse, United States of America, 1927
Manufacturer: Westinghouse, USA. Manufactured for: RCA who branded them Cunningham for sale by E. T. Cunningham Inc. -
Inscriptions
Bulb: (Cunningham logo) Base: (Cunningham logo)/Cunningham/-CX-381-
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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
145 mm (Length), 60 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 323, 325 Pages
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Keywords
