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12

Information - Help 
ID = 13394
       
Country:
United States of America (USA)
Brand:
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   Universal 
Identical to 12
Similar Tubes
Other base:
  11 ; C11 ; CX12 ; UX112/A ; WD11 ; WX12
Successor Tubes 1925   WX12   CX12  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE) (Codex=Bo)
Filament Vf 1 Volts / If 0.25 Ampere / Direct / Battery =
Description Ua = 90 V; Ia = 2,5 mA; Ug1 = -4,5 V; Ra = 15,5 kOhm; S 0,425 mA/V V = 6,6 
Information source Taschenbuch zum Röhren-Codex 1948/49   
  valvula12.png
  12: Internet
Miguel Angel Trujillo-Rodriguez
 
img_20131028_1522181560930507.jpg
12: Ebay item 280957911304
Clive Forder

 
uvsockel_8.png
12: KoBi
Konrad Birkner † 12.08.2014

 

from Just Qvigstad

Usage in Models 1= 1928? ; 2= 1928 ; 1= 1930?? ; 1= 1930 ; 2= 1933??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):7

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