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Dull-Emitter_Fairy

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ID = 49913
       
Country:
Netherlands
Brand: Frelat N.V.; Amsterdam
Developer: Heussen, M. & Co; Arnhem 
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to Dull-Emitter_Fairy

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 0.06 Ampere / Direct / Battery =
Description

Vf=3,5-4 Volt, Va=30-100 Volt, Ri=9000 Ohm, S=0,33 mA/V, g=3.

 
Information source Radio Wereld, The Netherlands   25-2-1926

b4_base_pins~~257.png Dull-Emitter_Fairy: Fin Stewart
Fin Stewart


Just Qvigstad

Collection of

 
dull_emitter.jpg

Dull-Emitter_Fairy
 

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