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Photocells - Movie Projector, 1940-1950 Object Reg. No: ST 035930

Summary:
Two photocells in original cartons: Cintel, Type GS47, 1940 - 1950 and Photocell - Ampro, Part No. 3377, circa 1940.
Description:
Tubular glass bulbs on three pin miniature bakelite base. Each with curved cathode with gold coloured internal surface. Valves are contained in rectangular buff coloured cardboard boxes.
Acquisition Information:
Donation from Mrs M. Kennedy
Discipline: Technology
Dimensions: 60 cm (Length), 17 cm (Diameter)

More information

Tagged with: thermionic electron valves
Themes this item is part of: Engineering Collection, Information & Communication Collection
Primary Classification: ELECTRONICS
Secondary Classification: Vacuum Technology
Tertiary Classification: radiation detection - light
Inscriptions: Bulb: None
Side of box: TYPE G.S. 47/VOLTS/ (pencil)90/MAX./(Cintel logo)/MADE/IN/ENGLAND/SERIAL No. A /2617(pencil)/CINEMA-TELEVISION LTD

Bulb: (paper label)90V
Paper label wrapped around bulb but not attached: "AMPRO" Photo cell/Part No. 3377/VOLTS/80(handwritten)/Max./SERIAL NO./9155(handwritten)/Made in England
Manufacturer: Cinema-Television Ltd, London, England, 1940-1950

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