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ID = 57610
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to BU90/100

Base Edison, size not known
Filament Specified current AC/DC ~ = (Series working)

50-150V, 0.810-0.990A

Dimensions (WHD)
incl. pins / tip
64 x 320 x mm / 2.52 x 12.60 x inch
Information source - - Manufacturers Literature   december 1948

BU90/100: own collection
Peter den Boer

Collection of



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