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R41_Ekco

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ID = 74866
       
Country:
Great Britain (UK)
Brand: Ekco, E.K.Cole Ltd.; Southend-on-Sea
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to R41_Ekco
Similar Tubes
Normally replaceable-slightly different:
  DW3

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2 Ampere / Direct / Specified voltage AC/DC
Description

Va<325 rms, Ia<125mA mean.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 286 & 287
British Radio Valves - The Classic Years: 1926-1946   Supplement, p. 143
Universal Vade-Mecum, Electron Valves and Semiconductor Devices


Just Qvigstad
Usage in Models 4= 1938 ; 1= 1939?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5
 

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