Summary
A triode, manufactured by Bond, introduced in about 1928. It was used in audio frequency amplifiers and a detector. It is equivalent to types UY227 and 27.
The type *27 was widely used in AC receivers in the United States in the late 1920s and early 1930s.
It used a 2.5 Volt indirectly heated cathode,
Physical Description
Five pin base.
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, 17 Feb 1972
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Manufacturer
Bond Electric Corporation, Jersey City, New Jersey, United States of America, circa 1930
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Inscriptions
Globe: two paper labels 'BOND' 'MADE IN USA' On base: Y-227
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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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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1977, 352 Pages
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Keywords