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B228

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ID = 1775
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to B228 = H210 = B2_Lissen = B2_Zenith = HL2_Tungsram = HL2_MOV
Similar Tubes
Other shape (e.g. bulb type):
  Super-Detector-Bivolt
Normally replaceable-slightly different:
  A2 ; BC18D ; BC40 ; HF-Bivolt ; RC-Bivolt ; RE102 ; Super-HF-Bivolt ; Super-HF-Fourvolt
Other characteristic (electr. data):
  VT107_TKD
Other base:
  B228_UX4
Other base and data slightly different:
  U210/M
First year 1931 -- Schematic
First Source (s)
1931 : Overzicht v.de toe te p PHILIPS Modell 830B u.a.
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   
L'ABCDaire des lampes de TSF des jeunes années   p.34
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
Tube Tester Data Avo CT160
1_13.png B228: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
Just Qvigstad 		b228_spec.png
B228: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
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Usage in Models 2= 1931 ; 1= 1933 ; 2= 1934? ; 4= 1934 ; 2= 1935? ; 5= 1935 ; 1= 1936? ; 5= 1936 ; 5= 1937 ; 1= 1939
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):28

Collection of

Ludvig Rylander (S)
Jose Vigil (RA)
Collection of a member from FIN
Patrice Zeissloff (F)
Collection of a member from D
Thomas Lebeth (A)
Sergey Kashekhlebov (RUS)
Stefan Müller (D)
Peter Pfeiffer (D)
Rudolf Osterkamp (D)
 
b228_01.jpg

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