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U30

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ID = 8266
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Tube type:  High-vacuum Rectifier   Power-supply 
Identical to U30 = ZA7237 = CV3752
First year 1924 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base British-7-Pin, old (M7A) (Codex=Ni)
Was used by Radio/TV-reception etc.
Filament Vf 26 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Description

Center tapped filament enables parallel feed 13 V / 0.6 A or series supply at 26 V / 0.3 A. Independent systems (separate cathodes). Also for voltage doubler circuit.

 
Text in other languages (may differ)
Information source - - Manufacturers Literature   Funke W18, Karte 437
Babani, International Radio Tube Encyclopaedia   p. 290 & 291
History of the British Radio Valve to 1940
Taschenbuch zum Röhren-Codex 1948/49

506.png U30: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
Usage in Models 5= 1934 ; 2= 1935?? ; 1= 1935? ; 11= 1935 ; 1= 1936?? ; 1= 1936? ; 11= 1936 ; 4= 1937 ; 1= 1955

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):37

Collection of

Collection of a member from FIN
Collection of a member from D
 
u30_1.jpeg

U30
 

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