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Fleming_1889

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ID = 82801
       
 
   
Tube type:  Signal Diode - one single system   Detector 
Identical to Fleming_1889

Base Wires
Was used by Radio/TV-reception etc.
Filament Direct / Battery =
Description

John Ambrose Fleming had the Edison Swan United Electric Company make him an experimental series of valves in 1889. THese were known as oscillation valves. Several types and sizes of a similar style were made. Filament voltage is unknown. Several of these are in the Science Museum in London and replicas have been made over the years.

 
Information source -- Collector info (Sammler)   
 
fleming_diode_nvm.jpg
Fleming_1889: National Valve Museum UK
Fin Stewart

 

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