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EW20

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ID = 18165
       
Country:
Germany
Brand: Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to EW20 = EW1104

Base Edison medium E14 = 14 mm, mignon (Codex=Edison 14 mm)
Filament
Description

4,3...9,5 V; 1,1A

 
Tube prices 2 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

0_ball_1_23.png EW20
Emilio Ciardiello


Just Qvigstad
ew20_kennl.png
EW20: Stiller - Die Schwachstromtechnik
Georg Richter

Usage in Models 5= 1925?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

Collection of a member from D
 
ew20.jpg

EW20
 

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