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Record Details

12 Volt Fleming Valve, by Ediswan, London, c. 1905

preview image for 12 Volt Fleming Valve, by Ediswan, London, c. 1905
Inventory Number: 89981
Object Type:
Place Created: London England United Kingdom Europe
Accession Number: 2004-9/477
Brief Description: 12 Volt Fleming Valve, held in varnished wooden 'gallows' mounting with base, underlined with red baize. With two brass? terminals upon upper surface base, and single brass terminal upon ebonite protruding base attached to upper surface of 'gallows'. Valve consists of bulb envelope, with internal nickel-plated vertically-mounted anode and filaments, and asbestos filled tip connecting filaments to valve base.

This valve was used at Poldhu during the experimental demonstrations to officers of the Navy, Army and Post Office in 1905.
Primary Inscriptions: None
Provenance: Presented by the Marconi Corporation.
Collection Group: Marconi Collection
Material(s): Wood


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