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IW3 Country:  Great Britain (UK)      Brand:  Mullard Radio Valve Co. Ltd.;     Tube type:  High-vacuum Rectifier   Power-supply  Tube ID = 7941 previous  |  next Identical to IW3 Similar Tubes Normally replaceable-slightly different:  1A7; A11B; MU12; R2; UU3 Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Em) Was used by Radio/TV-reception etc. Filament Vf 4 Volts / If: 2.4 Ampere / -: Half indirect / -: Parallel, (AC/DC) / Description 350v RMS per anode. I<120mA at 350V dc.  Literature Taschenbuch zum Röhren-Codex 1948/49    - - Manufacturers Literature

Telefunken Werkstattbuch Wolfgang Bauer   Mullard Valves 1936 Peter Hoddow

Usage in Models (calculation each 25th of the month)   1= 1933?? ; 1= 1933? ; 1= 1934?? ; 9= 1934 ; 2= 1935?? ; 8= 1935 ; 2= 1936? ; 1= 1936 ; 1= 1938? ; Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   26

No further Information for IW3

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