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313R

Information - Help 
ID = 78857
       
 
   
Tube type:  Light Bulbs - very special   Indication 
Identical to 313R
Similar Tubes
Other class quality (otherwise equal):
  313_lamp

Base Swan-Bajonet, small =B9=9.5 mm
Was used by Radio/TV-reception etc.
Filament Vf 28 Volts / If 0.17 Ampere / Direct / Battery =
Description This lamp is the sprayed red version of the type 313 and was originally designed for use in American aircraft in the late 1930's. Red lamps of this type have been used in sound mixers by musicians for some years because of their voltage being so close to the old 30 volt computer power supplies which have been adapted for the sound mixers. One red glass General Electric 313R has been seen 
Dimensions (WHD)
incl. pins / tip
x 30 x 10 mm / x 1.18 x 0.39 inch
Weight 2 g / 0.07 oz
 
313r_tung_sol_e1118.jpg
313R: Ebay item November 2018
Fin Stewart

 

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