Thermionic Valves and Dry Electrolytic Cells
- Made:
- 1920-1950 in United Kingdom
- maker:
- Ferranti Limited
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© The Board of Trustees of the Science Museum
Six dry electrolytic cells and two thermionic valves, made by Ferranti Limited. Valve models are EF91 and 6X4.
Details
- Category:
- Electronic Components
- Object Number:
- Y1996.10.23
- Materials:
- metal (unknown) and glass
- Measurements:
-
electrolytic dry cell: 68 mm 28 mm,
EF91 valve: 54 mm 17 mm,
6X4 valve: 64 mm 18 mm,
- type:
- thermionic valve and batteries
- credit:
- Gift of Ferranti International Signal plc
