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E447

Information - Help 
ID = 1733
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to E447 = RENS1294 = A4AMS = A4AMS2 = TE47 = NVS43 = WE24 = LAS324 = HP4106 = RS4347 = S432 = VMP4 = 4A10_Ultron = 5-447 = H4129D
Similar Tubes
Other shape (e.g. bulb type):
  T5-447
Normally replaceable-slightly different:
  A50A ; AC/VP ; DH204 ; MT4110 ; S434N ; T4700 ; T4700N ; TE474 ; TM-C3G-PV ; VH2 ; W447 ; W519
Other characteristic (electr. data):
  AF2
Heater different:
  B2047
Other base:
  E447_UX7 ; NVS43_B5+1
Other base and data slightly different:
  HP4105
First year 1933 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Apr.1933 : Philips Bulletin #D6
Apr.1933 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Predecessor Tubes E455  
Successor Tubes AF2   AF3  
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect / Specified voltage AC/DC
Description

This tube is a variable mu type.

 
Information source - - Manufacturers Literature   
Babani, International Radio Tube Encyclopaedia   p. 100 & 101
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
e447.gif
E447: ficha de valvulas
Getulio Jimenez-Gomez
13_6~~3.png E447: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		e447_spec.png
E447: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 3= 1933?? ; 5= 1933? ; 51= 1933 ; 1= 1934?? ; 11= 1934? ; 60= 1934 ; 1= 1935?? ; 5= 1935? ; 21= 1935 ; 2= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):160

Collection of

Thomas Lebeth (A)
Wolfgang Bauer (A)
John Koster (NL)
Christian ADAM (F)
Jean-Jacques Pontigny (F)
Jose Luis Villabona Horreo (E)
Roberto Guidorzi (I)
Collection of a member from FIN
Tomasz Szczesniak (PL)
Collection of a member from D
Heinz Schmidt (D)
Rudolf Osterkamp (D)
 
e447_philips.jpg

E447
 

Variants

Obenanschluß steckbar. Philips Miniwatt .Made in Great Britain
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