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FER3_4Volt

Information - Aide 
ID = 80811
       
Pays:
Royaume Uni
Fabricant: Louden Valve (Brand), Fellows Magneto Co. Ltd.; London
Concepteur: Louden Valve (Brand), Fellows Magneto Co. Ltd.; London 
Type:  Triode, vacuum   Detector 
Identique à FER3_4Volt
Similaires
Différent chauffage :
  FER3_6Volt

Culot Europe 4-Pin B4 (Eu A, E, 4A) 1914
Utilisé par Radio/TV-reception etc.
Chauffage Vf 4 Volt / If 0.1 Ampère / Direct / Battery =
Description

Louden valves were marketed by Fellows Magneto Co. Ltd. from 1924 to 1927. Some Louden designations used were F1 and F2 for bright emitters; FER1, FER2 are the corresponding dull emitter tubes having thoriated filaments.

 
Bibliographie Wireless World (The), London (WW, 79)   13 April 1927
History of the British Radio Valve to 1940   p. 147
British Radio Valves - The Classic Years: 1926-1946

b4_base_pins~~7.png FER3_4Volt: Fin Stewart
Fin Stewart


Just Qvigstad
 

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