radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

B425

Information - Help 
ID = 2474
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Universal 
Identical to B425
Similar Tubes
Normally replaceable-slightly different:
  410W ; DT5 ; DW302
First Source (s)
Apr.1930 : Philips Bulletin
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Information source L'ABCDaire des lampes de TSF des jeunes années   p. 41
Babani, International Radio Tube Encyclopaedia   p. 54 & 55
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
b425_sock.png B425: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Just Qvigstad 		b425_spec.png
B425: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
Usage in Models 1= 1929 ; 1= 1930? ; 8= 1930 ; 6= 1931 ; 1= 1932??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):17

Collection of

Tomasz Szczesniak (PL)
Hartmut Völler (D)
 
b425_1.jpeg

B425
 
You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
Data Compliance More Information