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C12_Triode

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ID = 19481
       
Country:
United States of America (USA)
Brand: Cunningham Inc., E.T.; Harrison (NJ)
Developer: Cunningham Inc., E.T.; Harrison (NJ) 
Tube type:  Triode, vacuum   Universal 
Identical to C12_Triode = WD12
Similar Tubes
Other base:
  CX12 ; WX12
Predecessor Tubes C11  
Successor Tubes CX12  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Filament Vf 1.1 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 
 
cunningham_c12_02.jpg
C12_Triode: O.F.
Otto Frosinn

 
uvsockel_7.png
C12_Triode: KoBi
Konrad Birkner † 12.08.2014

 
tubedata1923~~6.png
C12_Triode: KoBi
Konrad Birkner † 12.08.2014


from Just Qvigstad

Usage in Models 3= 1923 ; 4= 1924

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


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