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PH281

Information - Help 
ID = 51245
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to PH281 = 81 = UX281 = 1562_UX4-pin
First Source (s)
Aug.1930 : L'Histoire Singulière du Tube Radio; G. Duperray 2009

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
Dimensions (WHD)
incl. pins / tip
58 x 154 x 34 mm / 2.28 x 6.06 x 1.34 inch
Weight 88 g / 3.10 oz
Information source - - Manufacturers Literature   1933
 
ph281.jpg
PH281
Peter den Boer

 
424_2~~1.png
PH281: Telefunken Werkstattbuch
Wolfgang Bauer

 

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