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D20/4

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ID = 14044
       
Country:
Germany
Brand: Spanner GmbH, Marken: Delta Valve, Altron, Neo-Delta; Berlin
Tube type:  TRIODE (Detail uncertain) 
Identical to D20/4
First Source (s)
Jul.1928 : Funk Bastler 1928, Heft 31
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.08 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   

Just Qvigstad 		d204.png
D20/4: Funk-Bastler 1928, Heft 41
Hartmut Völler
 
Forum contributions about this tube
D20/4
Threads: 1 | Posts: 1
Hits: 1837     Replies: 0
D20/4 (D20/4) Delta NEO
Ralf Keil
29.Aug.15 		  1
D20/4 (D20/4) Delta NEO 

Die Röhre hat lt. Aufdruck eine Uf von 3,8Volt und einen If von ca. 0,1A.

Es wurden 2 Röhrensysteme mit runder Anode parallel geschaltet.

Bild folgt.

 

 

R.K.
 
 
D20/4
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