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WD12

Information - Help 
ID = 15065
       
Country:
United States of America (USA)
Brand:
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   Universal 
Identical to WD12 = C12_Triode = Junior_Concertmaster = 112_WD12 = U12_Ureco = D_Amplion = 2959 = 012 = MD12 = V.T.12 = 412_Royaltron
Similar Tubes
Normally replaceable-slightly different:
  CT12 ; Dry-Battery ; M12 ; OH12 ; dry_cell-Murdon
Other base:
  11 ; 12_UX ; CX12 ; SLD12 ; WD11 ; WX12
First year 1923 Saga of the Vacuum Tube, Tyne page 313
Production stop 1926
Predecessor Tubes WD11  
Successor Tubes 1925   WX12   CX12  

Base UV-Base (4 Pins+Bayonet, USA 1914 WE) (Codex=Bo)
Was used by Radio/TV-reception etc.
Filament Vf 1.1 Volts / If 0.25 Ampere / Direct / Battery =
Description

tHe WD12 was introduced in 1923 but discontinued in 1926. It was made by several US manufacturers.  It is a WD11 with UV base. 

 
Text in other languages (may differ)
Tube prices 14 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
 
wd-12rca_3_klein.jpg
WD12
Geri Meier

 
uvsockel_1.png
WD12: KoBi
Konrad Birkner † 12.08.2014

 
wd12.png
WD12: KoBi
Konrad Birkner † 12.08.2014


from Just Qvigstad

Usage in Models 21= 1923 ; 3= 1924? ; 21= 1924 ; 3= 1925? ; 4= 1925

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):52


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