E.S.75 wireless valve, 1883-1930

1883-1930 in Ponders End

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Type E.S.75 wireless valve, Edison output triode, made by the Edison & Swan United Electric Light Company, Ponders End, London, England, 1883-1930

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Science Museum: Information Age Gallery: Broadcast

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Electronic Components
Object Number:
glass, metal (unknown) and plastic (unidentified)
thermionic valve
  • component - object
Donated by the Edison and Swan Electric Light Company Limited

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