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B403

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ID = 3943
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to B403
Similar Tubes
Normally replaceable-slightly different:
  2LO ; R64
Other base:
  B403_UX4
First year 1925 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
1924 : Saga of the Vacuumtube, Tyne p.421

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Battery =
Tube prices 1 Tube prices (visible for members only)
Literature - - Manufacturers Literature   R149H 1-11-1926
Taschenbuch zum Röhren-Codex 1948/49   
 
b403_01_1.jpg
B403: Collection TL
Thomas Lebeth

 
1_14.png
B403: Telefunken Werkstattbuch
Wolfgang Bauer

 
b403.png
B403: own collection
Peter den Boer


Usage in Models 4= 1925 ; 1= 1926? ; 6= 1926 ; 3= 1927? ; 16= 1927 ; 1= 1928?? ; 7= 1928? ; 9= 1928 ; 4= 1929 ; 1= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):52


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