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904V

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ID = 13587
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Audio Frequency 
Identical to 904V
Similar Tubes
Normally replaceable-slightly different:
  41MH ; 4DXAC ; A30B ; AC2HL ; MH41
First Source (s)
1932 : History of the British Radio Valve to 1940 p. 149 & 178
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

"Non-microphonic detector". Filament current resuced to .65a in 1935.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 36 & 37
- - Manufacturers Literature   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

7_62.png 904V: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
mullard_904v.png
904V: KoBi
Konrad Birkner † 12.08.2014

Usage in Models 1= 1931? ; 3= 1931 ; 6= 1932? ; 3= 1932 ; 1= 1933?? ; 4= 1933? ; 3= 1934? ; 3= 1934 ; 1= 1936?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):25

Collection of

Collection of a member from D
 
904v_mullard.jpg

904V
 

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