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B405

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ID = 2744
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Power/Output 
Identical to B405 = LL25 = A25 = DP4 = DU412 = CL975 = DV27/4 = L4 = L414 = L415 = M54 = U412 = V62 = H_Adzam = P3 = P425 = RE114 = RO4206 = P414 = DX502 = CL104 = TB06 = 2-405 = RE124
Similar Tubes
Normally replaceable-slightly different:
  415SP ; 415XP ; 420LL ; 4B5_Ultron ; 4BFF ; A4BF ; B712 ; B720 ; BD5 ; BF5 ; BF6 ; BFF ; C303B ; C306B ; C_Adzam ; D05/4 ; D5 ; D94 ; E.4P ; E4.10 ; G405 ; HP604 ; Hyper-Power-Fourvolt ; K420 ; L44 ; LX414 ; MR11 ; OX45 ; P405 ; P415 ; R3854 ; R5046 ; R77 ; RO4305 ; SP4_Triotron ; TB05 ; TMBF2 ; TMD_Mazda ; V82
Other base:
  B405_UX ; R64_7pin
First year 1925 Saga of the Vacuum Tube, Tyne page 421 - and models.
First Source (s)
Aug.1930 : Philips Bulletin R1164, p. 16
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Specified voltage AC/DC
Tube prices 1 Tube prices (visible for members only)
Information source - - Manufacturers Literature   
L'ABCDaire des lampes de TSF des jeunes années   p. 38
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
1_15.png B405: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		daten_b405_philips.png
B405: Philips Verstärkerröhren
Gerhard Heigl
More ...
Usage in Models 1= 1925 ; 4= 1926 ; 3= 1927?? ; 2= 1927? ; 20= 1927 ; 3= 1928?? ; 11= 1928? ; 20= 1928 ; 4= 1929?? ; 10= 1929? ; 40= 1929 ; 1= 1930?? ; 3= 1930? ; 15= 1930 ; 4= 1931 ; 4= 1932 ; 2= 1933 ; 1= 1934 ; 1= 1935
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):149

Collection of

Giuseppe Antonio Tusini (I)
Jose Luis Campayo-Soriano (E)
Jacky Parmentier (F)
Sándor Selyem-Tóth (H)
Jose Luis Villabona Horreo (E)
Gerhard Heigl (A)
Timo Rantasaari (FIN)
Christian Schaufelberger (CH)
Wolfgang Bauer (A)
Karl - Heinz Bossan (D)
Robert Gillespie (USA)
Collection of a member from A
Hartmut Völler (D)
Tomasz Szczesniak (PL)
 
b405~~1.jpg

B405
 
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