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Power_Fairy

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ID = 49931
       
Country:
Netherlands
Brand: Frelat N.V.; Amsterdam
Developer: Heussen, M. & Co; Arnhem 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to Power_Fairy

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 3.8 Volts / If 0.5 Ampere / Direct / Battery =
Description

Vf=3.8-4 Volt, If=0.5 A, Va=30-100 Volt, Ri=16000 Ohm, S=0.55 mA/V, g=9

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

b4_base_pins~~625.png Power_Fairy: Fin Stewart
Fin Stewart


Just Qvigstad
 

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