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DDD11

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ID = 615
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH 
Tube type:  Double Triode   Power/Output 
Identical to DDD11
First year 1940 -- Collector info (Sammler)
First Source (s)
May.1940 : Funkschau 1940 #4
Predecessor Tubes KDD1  

Base German Steel Y8A, 1938 (Codex=Rw)
Filament Vf 1.2 Volts / If 0.1 Ampere / Direct / Battery =
Tube prices 2 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  umgebungsschaltbild_ddd1.png
  DDD11: Röhrenkartei Drenkelfort
Peter Hoddow
 
tjr_telefunken_ddd11.jpg
DDD11
Timo Rantasaari

 
177.png
DDD11: Telefunken Werkstattbuch
Wolfgang Bauer

 
ddd11_data1.png
DDD11: Telefunken 1941
Robert Schmalstieg


Usage in Models 1= 1939 ; 1= 1940? ; 8= 1940 ; 1= 1941? ; 10= 1941

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):21


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