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442BU

Information - Help 
ID = 7467
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to 442BU
Similar Tubes
Normally replaceable-slightly different:
  GL4/1

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 4 Volts / If 2.5 Ampere / Direct / Parallel, (AC/DC)
Description

Input 350-0-350 rms; Rectified current <120mA mean.

 
Literature Taschenbuch zum Röhren-Codex 1948/49   
The Wireless World, London (WW, 79)   Data book
 
cossor_442bu.jpg
442BU: Sammlung GJ
Anonymous 544 Collector

 
17_65.png
442BU: Telefunken Werkstattbuch
Wolfgang Bauer

 
442bu_data.png
442BU: COSSOR VALVE MANUAL 1935-6
Jose Casas-Avalos


Usage in Models 2= 1931 ; 1= 1933?? ; 5= 1933 ; 6= 1934 ; 1= 1935?? ; 10= 1935 ; 1= 1936?? ; 2= 1936? ; 4= 1936 ; 11= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):43

Collection of a member from D

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