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DDU412

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ID = 17712
       
Country:
Hungary
Brand: VATEA; Budapest
Tube type:  Space Charge Tetrode 
Identical to DDU412

Base SPECIAL TUBEBASE in general 2 Sidecontacts.
Filament Vf 4 Volts / If 0.12 Ampere / Direct / Battery =
Description Es sind zwei elektr. unterschiedliche Raumladegitter-Tetroden eingebaut. Der Sockel hat 6 Stifte und 2 Seitenschrauben.--- Aus: "Die Röhren der Gegenwart" Schwandt/Kunze, 1928. 
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
vatea_ddu412_ansicht_vorn.jpg
DDU412: Foto: H. Börner
Herbert Börner

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vatea_ddu412_stiftbelegung.gif
DDU412: Foto: H. Börner
Herbert Börner

 

Usage in Models 1= 1928

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


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