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E445

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ID = 2505
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to E445 = LAS317 = VMS4 = TE45 = LAS317 = VM4V = 4VMAC = RENS1214 = AS4104 = H4125D
Similar Tubes
Normally replaceable-slightly different:
  A4VM ; Dn5004 ; ISV ; NVS4 ; RS4145 ; S4150C ; VS2_Oxytron ; W419
First year 1931 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Oct.1931 : Philips Bulletin # 3
1931 : Saga of the Vacuum Tube, Tyne p.422
Successor Tubes E455  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect / Specified voltage AC/DC
Tube prices 2 Tube prices (visible for members only)
Information source Philips Bulletin   September 1932
L'Histoire Singulière du Tube Radio; G. Duperray 2009   Sept. 1931
Taschenbuch zum Röhren-Codex 1948/49

e445.gif
E445: ficha de valvulas
Getulio Jimenez-Gomez

9_12.png E445: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
e445_spec.png
E445: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

More ...
Usage in Models 1= 1931 ; 1= 1932?? ; 1= 1932? ; 19= 1932 ; 2= 1933?? ; 7= 1933? ; 9= 1933 ; 2= 1934? ; 2= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):44

Collection of

 
e445_02.jpg

E445
 

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