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History of Science Museum

Experimental Fleming Valve, by J.A. Fleming, English, c. 1889

Inventory Number 85593


Acknowledgement: © History of Science Museum, University of Oxford, inv.85593

Item type
Object
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
None
Object type
Radio valve
Dimensions
Height: 240mm
Inventory No
85593
Accession Number
2004-9/472

Description

Experimental Fleming Valve with single vertically-mounted nickel-plated flat anode in single-loop filament, on polished black ebonite base, with ring-turned wood plinth, and three wires forming legs. Glass bulb slightly loose in ebonite base.