Summary
Vacuum photo tube for movie projectors. It was manufactured by RCA.
Max voltage: 500, peak sensitivity at 800 nm, Sensitivity 20 µA/lm.
Physical Description
Cylindrical glass bulb with metal end caps
More Information
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Collecting Areas
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Acquisition Information
Donation from Mrs F. Jeffery, 07 Jun 1976
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Manufacturer
Radio Corporation of America (RCA), United States of America, circa 1943
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Inscriptions
Bulb: (RCA logo) 922 MADE IN USA
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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
43 mm (Length), 22 mm (Outside Diameter)
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Keywords
Cinematography, Electro Acoustics, Photocells, Photoelectric Tubes