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A404

Information - Help 
ID = 29378
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to A404

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Description LF amplification, output. 
Dimensions (WHD)
incl. pins / tip
42 x 88 x 29 mm / 1.65 x 3.46 x 1.14 inch
Weight 47 g / 1.66 oz
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 95
- - Manufacturers Literature   1925
 
a404philips.jpg
A404: own collection
John Koster

 
b4direct_30.png
A404
Peter den Boer

 
a404data.png
A404: own collection
Peter den Boer


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