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KD50

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ID = 14378
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum   Power/Output 
Identical to KD50
Similar Tubes
Normally replaceable-slightly different:
  DA3
Other class quality (otherwise equal):
  4692
First Source (s)
Feb.1942 : -- Original-techn. papers.

Base SPECIAL TUBEBASE in general (Codex=Sp 26)
Filament Vf 2 Volts / If 0.05 Ampere / Direct / Battery =
Description hard-hearing aid- old-style miniature type 
Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   

s_423_g_2~~1.gif KD50: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

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kd50_philips_miniwatt_1938_p1.png
KD50: Philips_Miniwatt 1939 Blackbook
Adrian Riesen

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