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E428

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ID = 1696
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to E428 = A430N = REN904 = AG495 = A4110 = E424N
Similar Tubes
Other shape (e.g. bulb type):
  I1304 ; T5-428
Normally replaceable-slightly different:
  5-428 ; M428 ; W308 ; W428
Other base:
  E428_4pin
First year 1929 Tube leaflet collection E.Erb Analysis by original leaflets
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
Information source - - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49   
e428.gif
E428: ficha de valvulas
Getulio Jimenez-Gomez
7_18.png E428: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		e428_spec.png
E428: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 2= 1929 ; 6= 1930 ; 13= 1931 ; 3= 1932? ; 20= 1932 ; 2= 1933? ; 12= 1933 ; 3= 1934
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):61

Collection of

John Koster (NL)
Marco Lagendijk (NL)
Georges Werts (B)
Heinz Schmidt (D)
Peter Pfeiffer (D)
Otto Frosinn (D)
Jürgen Bauch (D)
Rudolf Osterkamp (D)
 
e428.png

E428
 
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