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DE5 Info
Country:  Europe      Brand:  Common type Europe 
  Tube type:  Triode, vacuum   Power/Output 
Tube ID = 7720
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Identical to DE5 = RE074

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Bo)
Filament -: Direct / If: 0.25 Ampere / Vf 6 Volts /
Description Power triode for the last stage of audio amplifying chains. Mu 7. Va 140V, with 9V negative grid bias and 8000 ohms out impedance. Heater could be operated between 5 and 6V. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   Marconi catalog No. 520, Sept. 1928

de5.jpg
J.S.
Jörg Seidel

 
de5_so.png
rtt
Michael Schlör

 
Usage in Models   1= 1923 ; 2= 1924 ; 2= 1925 ;
Number of Models with this tube   5
No further Information for

DE5    

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