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B255

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ID = 2469
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Screen-grid Tetrode   Controlling (mu) 
  Ca. 1925 up to 1945 rare.
Identical to B255 = S2
Similar Tubes
Other base:
  B255_UX4
First year 1932 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Er) Top contact screw type
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Battery =
Literature - - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49   
 
b255_philips.jpg
B255: My tubes
Anonymous 413 Collector

 
3_3.png
B255: Telefunken Werkstattbuch
Wolfgang Bauer

 
b255_spec.png
B255: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 6= 1934 ; 1= 1935? ; 3= 1935 ; 1= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11


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