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ID = 524
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  OCTODE   Frequency converter   Controlling (mu) 
Identical to EK1 = TEK1 = VEK1 = VK1
Similar Tubes
Heater different:
  AK2 ; CK1
First year Mar.1934 Tube leaflet collection E.Erb Philips-Bulletin März 1934
First Source (s)
Mar.1934 : Philips Bulletin #D13
Successor Tubes 1936   EK2  

Base Europe side contact P8A (Au P, 8SC) (Codex=Seo)
Filament Vf 6.3 Volts / If 0.4 Ampere / Indirect / Specified voltage AC/DC
Description Gehört zur ersten Autoradioröhrenserie in Europa. 
Information source Taschenbuch zum Röhren-Codex 1948/49   

EK1: Röhrenkartei Drenkelfort
Peter Hoddow

25_3.png EK1: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
EK1: Telefunken 1936
Robert Schmalstieg

More ...
Usage in Models 2= 1934 ; 16= 1935 ; 2= 1936? ; 16= 1936 ; 2= 1937 ; 1= 1938

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):39

Collection of



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