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EFF50

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ID = 10068
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Double Pentode   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to EFF50
First year 1941 Tube leaflet collection E.Erb P41?
First Source (s)
Nov.1940 : -- Original-techn. papers.

Base Loctal-9-Pin (B9G) (Codex=Y)
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1942
  eff50.png
  EFF50: Internet
Miguel Angel Trujillo-Rodriguez
 
eff50.jpg
EFF50: Philips EFF50
John Hupse

 
lo32.png
EFF50: RTT 1974 (Franzis) 13. Auflage
Martin Renz

 
eff50data1.png
EFF50: own collection
Peter den Boer


Usage in Models 1= 1941 ; 1= 1942??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of a member from D

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