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509

Information - Help 
ID = 6864
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Half-Wave Rectifier, gasfilled   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to 509
First Source (s)
Sep.1931 : L'Histoire Singulière du Tube Radio; G. Duperray 2009

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 2 Volts / If 4 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   R627Du 15-11-1930

509_sock.png 509: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Just Qvigstad
gasiousrectless2amp_1.png
509: own collection
Peter den Boer

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Collection of

Collection of a member from D
 
509_philips.jpg

509
 

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