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4608

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ID = 21246
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to 4608 = 3S28

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Was used by Telephony
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

Va = 130V, Ia = 11mA, Vg = -5V, mu = 12, S = 2.5mA/V
AF output amplifier.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 40 & 41
-- Original-techn. papers.   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

4608_sock.png 4608: Röhren-Handbuch 1995 Franzis-Verlag
Heinz Höger


Just Qvigstad
4608_dat.png
4608: Röhren-Handbuch 1995 Franzis-Verlag
Heinz Höger

Collection of

 
4608.jpg

 

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