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B262

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ID = 2470
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Screen-grid Tetrode   Universal 
  Ca. 1925 up to 1945 rare.
Identical to B262 = S22
Similar Tubes
Other shape (e.g. bulb type):
  SX2
Normally replaceable-slightly different:
  215SG ; RES182 ; S210_Tungsram ; SG215 ; SS210
Other base:
  B262_UX4
First year 1932 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   
Babani, International Radio Tube Encyclopaedia   p. 52 & 53
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1951

3_4.png B262: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
b262_spec.png
B262: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

More ...
Usage in Models 3= 1934? ; 7= 1934 ; 1= 1935? ; 3= 1935 ; 3= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):17

Collection of

 
b262~~1.jpg

B262
 

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