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NU-81

Information - Help 
ID = 77310
       
Country:
United States of America (USA)
Brand: National Union Radio Corp.; Orange (NJ)
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to NU-81 = 81
Similar Tubes
Other shape (e.g. bulb type):
  CX381 ; UX281

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 7.5 Volts / If 1.25 Ampere / Direct / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
x 135 x 50 mm / x 5.31 x 1.97 inch
Weight 60 g / 2.12 oz
Literature -- Original prospect or advert   Shapleigh Hardware Co St Louis catalogue 1935
 
nu_80.png
NU-81: Fin Stewart
Fin Stewart

 

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