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BU400/6

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ID = 57642
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to BU400/6

Base Edison big E27 = 27 mm
Was used by Radio/TV-reception etc.
Filament
Information source - - Manufacturers Literature   december 1948
Babani, International Radio Tube Encyclopaedia   p. 316


Just Qvigstad
bu280-20_800-6data_3.png
BU400/6: own collection
Peter den Boer

 

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