Mazda 1R5 heptode valve, 1933-1966
- Made:
- 1933-1966 in Ponders End
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Buy this image as a print
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License
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Mazda heptode frequency changer valve, type 1R5, made by Edison & Swan United Electric Light Company, Ponders End, London, England, 1933-1966
Details
- Category:
- Electronic Components
- Object Number:
- 1966-125
- Materials:
- plastic (unidentified), metal (unknown) and glass
- Measurements:
-
overall: 55 mm x 25 mm x 25 mm,
- type:
- thermionic valve
- credit:
- From the Ministry of Supply
