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EW121

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ID = 18171
       
Country:
Germany
Brand: Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to EW121 = EW1408
Similar Tubes
Normally replaceable-slightly different:
  WE45_Rectron
First year 1929 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=E)
Filament
Description 8...24 V; 1,32...1,5 A
Mittelabgriff für GL 1,5 
Dimensions (WHD)
incl. pins / tip
50 x 133 x mm / 1.97 x 5.24 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   

sockel_3~~1.png EW121: Beier, Röhrentaschenbuch 1958
Oskar Elm


Just Qvigstad
Usage in Models 3= 1928? ; 3= 1929?? ; 4= 1929? ; 4= 1929

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):14

Collection of

Collection of a member from D
 
ew121_siemens_eisenwasserstoffwiderstand.jpg

EW121
 

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