Summary
Tetrode, known at the time as a screen-grid valve, used as a class A R. F. amplifier. Manufacturer: A. C. Cossor, England.
This valve type was introduced in 1928 but, based on the bulb shape, this example was manufactured much later than that, probably in the mid 1930s.
2 volt directly heated cathode.
Physical Description
Shouldered bulb (with top cap missing) on 4 pin European 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
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Inscriptions
Bulb: Paper label:/New Process/Cossor/215S.G/BVA
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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
132 mm (Length), 44 mm (Outside Diameter)
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Keywords