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B415

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ID = 2472
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to B415 = SD515 = DT3
Similar Tubes
Other shape (e.g. bulb type):
  B415K_SERIE100
Normally replaceable-slightly different:
  410H ; A410_Valvo ; D1208
First year 1925 Tube leaflet collection E.Erb Analysis by original leaflets

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. 40
Babani, International Radio Tube Encyclopaedia   p. 52 & 53
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

1_18.png B415: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
b415_spec.png
B415: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models 1= 1927 ; 2= 1928 ; 1= 1929? ; 9= 1929 ; 2= 1930?? ; 10= 1930 ; 9= 1931

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):34

Collection of

Collection of a member from FIN
 
b415_philips.jpg

B415
 

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