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U4520

Information - Help 
ID = 18278
       
Country:
Germany
Brand: Osram GmbH KG; Berlin
Tube type:  Current Regulator, Urdox without FeH 
Identical to U4520

Base Europe side contact base P (P8A) (Codex=S)
Filament
Description I quer 1 System/A = 0.2 U mittel/V = 100 
Literature Taschenbuch zum Röhren-Codex 1948/49   
Ballast Tube Handbook, The   
 
u45204_1.jpg
U4520: Sammlung
Wolfgang Bauer

 
189a_1.png
U4520: Telefunken Werkstattbuch
Wolfgang Bauer

 
u4520_spec.png
U4520: Osram, Liste #60, 1937
Anonymous 15 Collector


Usage in Models 1= 1938

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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