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1807

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ID = 7501
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Full-Wave Vacuum Rectifier 
Identical to 1807
Similar Tubes
Normally replaceable-slightly different:
  DW3_Mullard
First year 1931 -- Original-techn. papers. Mentioned in Wireless World Dec.9th,1931, page 665

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 4 Volts / If 2 Ampere / Direct
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
1807.jpg
1807: The National Museum of Computing
Oliver Harlow

 
17_102.png
1807: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 4= 1931? ; 1= 1931 ; 1= 1932? ; 3= 1932 ; 1= 1933 ; 2= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):12


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