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

Two photocells in original cartons: Cintel, Type GS47, 1940 - 1950 and Photocell - Ampro, Part No. 3377, circa 1940.
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)
Dimension Comment: Typical dimensions of each photocells.

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, Great Britain, 1940-1950

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