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BU30/4

Information - Help 
ID = 57574
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to BU30/4

Base Edison big E27 = 27 mm
Was used by Radio/TV-reception etc.
Filament Direct
Description

Voltage 2.5 - 6, Current .27 - .33 amps.

 
Dimensions (WHD)
incl. pins / tip
x 100 x 32 mm / x 3.94 x 1.26 inch
Information source - - Manufacturers Literature   Data sheet December 1948
 
baretter_e27.png
BU30/4: Fin Stewart
Fin Stewart

 
bu30-2_110data_3.png
BU30/4: own collection
Peter den Boer


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