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B409

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ID = 2471
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Power/Output 
Identical to B409 = RE134 = P410 = E1 = LP4 = L414_Tungsram = L413 = L415_Tungsram = TB09 = L4180 = GRDIII
Similar Tubes
Normally replaceable-slightly different:
  2-409 ; 415L ; 4L13a ; 4L14 ; 4L15 ; BF2 ; BF9 ; CLP13 ; D10/4 ; DT6 ; E4_Kremenezky ; G412 ; Gigant ; L316 ; L408_Lutece ; L415S ; LF410A ; LL413 ; LU4A ; M104 ; M94 ; PM4C ; R85 ; RO4309 ; S83 ; V409 ; YD4
Other class quality (otherwise equal):
  4603_PHILIPS
Other characteristic (electr. data):
  U412
Other base:
  B409_UX4
First year 1925 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Aug.1930 : Philips Bulletin R1164, p. 27
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. 39
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
1_17.png B409: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		b409_techdat01.png
B409: Philips Röhren Daten 1933
Peter Hoddow
More ...
Usage in Models 3= 1925 ; 1= 1926? ; 3= 1926 ; 4= 1927?? ; 1= 1927? ; 12= 1927 ; 4= 1928?? ; 15= 1928? ; 10= 1928 ; 1= 1929?? ; 3= 1929? ; 18= 1929 ; 1= 1930?? ; 4= 1930? ; 21= 1930 ; 2= 1931?? ; 2= 1931? ; 11= 1931 ; 3= 1932?? ; 1= 1932? ; 4= 1932 ; 7= 1933?? ; 4= 1933 ; 2= 1935? ; 1= 1940?? ; 1= 1941?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):139

Collection of

Aldo Patriarca (CH)
Hermann Fleischanderl (A)
Benedetto Pirani (I)
Francisc VISKY (RO)
Christian Schaufelberger (CH)
Tor Steinnes (N)
Martin Steyer (D)
Dmitrijs Ipolitov (LV)
Tomasz Szczesniak (PL)
Robert Gillespie (USA)
Adrian Riesen (CH)
Wolfgang Bauer (A)
 
b_409_philips.jpg

B409
 
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