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D3-50B

Information - Help 
ID = 7701
       
Country:
France
Brand: Métal; France (tubes)
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to D3-50B = 506

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
d3_50b_hvr830.jpg
D3-50B: eigene Sammlung HV
Hartmut Völler

 
17_112.png
D3-50B: Telefunken Werkstattbuch
Wolfgang Bauer

 

from Just Qvigstad

Usage in Models 2= 1931??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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