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E438

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ID = 1700
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum   Universal 
Identical to E438 = 5-438 = RS4230 = RS4238 = W4080 = 354VX = W4100 = REN1004 = ACR4
Similar Tubes
Other shape (e.g. bulb type):
  T5-438
Normally replaceable-slightly different:
  107 ; 41MRC ; 484V ; A5004 ; AR4100 ; DW3020 ; DW3559 ; DW4023 ; Dn404 ; E438N ; I4078 ; I503 ; M4A ; NR4 ; NW4 ; S440 ; S440N ; S440N ; TE38 ; TM-CDT1 ; VT2_Oxytron ; W307_Marathon ; W415N ; W438 ; WG43 ; WN4
Heater different:
  B2038
Other base:
  E438_4pin ; E438_4pin+2sideconn. ; E438_UY
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Jul.1929 : -- Original-techn. papers.
Dec.1929 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Tube prices 3 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
e438.png
E438: Internet
Miguel Angel Trujillo-Rodriguez
7_19.png E438: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		e438_spec.png
E438: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 1= 1928?? ; 1= 1928? ; 1= 1928 ; 2= 1929?? ; 2= 1929? ; 24= 1929 ; 4= 1930?? ; 5= 1930? ; 38= 1930 ; 5= 1931? ; 36= 1931 ; 5= 1932?? ; 5= 1932? ; 15= 1932 ; 5= 1933?? ; 6= 1933? ; 9= 1933 ; 3= 1934? ; 13= 1934 ; 1= 1935?? ; 6= 1935? ; 6= 1935 ; 2= 1936 ; 1= 1937?? ; 1= 1937? ; 1= 1939
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):198

Collection of

Karl Reiter (A)
Wolfgang Bauer (A)
Thomas Lebeth (A)
Aldo Patriarca (CH)
Christian Schaufelberger (CH)
Jean-Jacques Pontigny (F)
Jean-Louis HEYD (F)
Patrice Zeissloff (F)
Howard Craven (GB)
Ernst Röggla (I)
Collection of a member from FIN
Danko Tkalec (HR)
Leif Ekornrod (N)
Francisc VISKY (RO)
Ludvig Rylander (S)
Helmut Matysik (D)
Karl - Heinz Bossan (D)
Collection of a member from D
Jacob Roschy (D)
Trev Levick (D)
Reinhard Riek (D)
Hartmut Völler (D)
 
e438_01.jpg

E438
 
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