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B240

Information - Help 
ID = 3265
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Double Triode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to B240 = RE402B
Similar Tubes
Normally replaceable-slightly different:
  FB220
Other base:
  B240_UX6
First year 1934 Tube leaflet collection E.Erb Analysis by original leaflets
Successor Tubes KDD1  
Base Europe 7-Pin C7A (Hx C, C7, C) 1933 (Codex=Ls)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Description

Siehe auch: Zero-Bias- und Triple-Twin- Röhren

 
Information source - - Manufacturers Literature   
L'ABCDaire des lampes de TSF des jeunes années   p. 35
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
145.png B240: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
Just Qvigstad 		b240_spec.png
B240: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 2= 1934? ; 12= 1934 ; 2= 1935? ; 24= 1935 ; 4= 1936 ; 1= 1937??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):45

Collection of

Rudolf Osterkamp (D)
Antonio Martins-Pais (P)
Peter den Boer (NL)
Patrice Zeissloff (F)
 
b240_bild1.png

B240
 

Variants

Internal shielded.
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