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R4

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ID = 8082
       
Country:
Great Britain (UK)
Brand: Ferranti, GB
Tube type:  High-vacuum Rectifier   Power-supply 
Identical to R4
Similar Tubes
Normally replaceable-slightly different:
  RV120/350
First Source (s)
1933 : History of the British Radio Valve to 1940 p. 146 & 169
22.Nov.1935 : Wireless World (The), London (WW, 79)
Successor Tubes R4A_Ferranti  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2.5 Ampere / Direct / Specified voltage AC/DC
Description

2 x 350V rms; <120mA mean.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 286 & 287
- - Manufacturers Literature   Ferranti Data 1956
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

17_86~~1.png R4: Fin Stewart
Fin Stewart


Just Qvigstad
Usage in Models 1= 1932 ; 5= 1933 ; 1= 1934? ; 4= 1934 ; 4= 1935 ; 9= 1936 ; 5= 1937 ; 2= 1939

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):31

Collection of

Collection of a member from D
 
ferranti_r4.jpg

 

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