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U404

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ID = 18990
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to U404 = U118
Base Mazda-Rimlock (UK)
Was used by Radio/TV-reception etc.
Filament Vf 40 Volts / If 0.1 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Description

250V rms, 750V piv; I<90 mA mean with C=50 microF.

 
Information source - - Manufacturers Literature   1948
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 15, p. 14 & 15
Babani, International Radio Tube Encyclopaedia
206.png U404: Datenblatt
Wolfgang Bauer
More ...
Just Qvigstad 		u404data1.png
U404: own collection
Peter den Boer
More ...
Usage in Models 2= 1947? ; 4= 1947 ; 2= 1948?? ; 2= 1948? ; 3= 1948 ; 3= 1949? ; 5= 1949 ; 1= 1950?? ; 1= 1950? ; 3= 1950 ; 1= 1951? ; 2= 1951 ; 1= 1952? ; 3= 1952 ; 1= 1953?? ; 3= 1953 ; 1= 1954? ; 1= 1954 ; 1= 1955 ; 1= 1956 ; 1= 1957 ; 1= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):43

Collection of

Howard Craven (GB)
Frank Cuffe (IRL)
 
mazda_u404.jpg

U404
 
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