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EW20

Information - Help 
ID = 18165
       
Country:
Germany
Brand: Siemens; D (S.& Halske / S. Electrogeräte)
Tube type:  Current Regulator, Iron in Hydrogen 
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   
 
ew20.jpg
EW20: Stiller - Die Schwachstromtechnik
Georg Richter

 
0_ball_1_23.png
EW20
Emilio Ciardiello

 
ew20_kennl.png
EW20: Stiller - Die Schwachstromtechnik
Georg Richter


from Just Qvigstad

Usage in Models 2= 1925?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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