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EFF51

Information - Help 
ID = 10069
       
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 EFF51
First year 1941 Tube leaflet collection E.Erb P41?

Base Loctal-9-Pin (B9G) (Codex=Lo 32)
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect
Tube prices 4 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1942
  eff51.png
  EFF51: Courtesy Bureau Belper (De Muiderkring, Bussum)
Michael Schlör
 
valvo_eff51_001.jpg
EFF51: O.F.
Otto Frosinn

 
lo32_1.png
EFF51: RTT 1974 (Franzis) 13. Auflage
Martin Renz

 
eff51data1.png
EFF51: own collection
Peter den Boer


Usage in Models 1= 1948??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1



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