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U2020

Information - Help 
ID = 570
       
Country:
Germany
Brand: Osram GmbH KG; Berlin
Tube type:  Current Regulator, Urdox without FeH   Power-supply 
Identical to U2020
Similar Tubes
Normally replaceable-slightly different:
  U2020/5

Base Europe side contact base P (P8A) (Codex=S)
Filament
Description 200mA bei 19...23V
Netzspannung: 110...220V 
Dimensions (WHD)
incl. pins / tip
30 x 82 x mm / 1.18 x 3.23 x inch
Weight 28 g / 0.99 oz
Tube prices 1 Tube prices (visible for members only)
Literature Ballast Tube Handbook, The   
Taschenbuch zum Röhren-Codex 1948/49   
Röhren-Taschenbuch (frühe Ausgaben, spätere siehe andere Einträge)
 
u2020_53r.jpg
U2020: Collection JR
Jacob Roschy

 
189_5.png
U2020: Telefunken Werkstattbuch
Wolfgang Bauer

 
u2020_spec.png
U2020: Osram, Liste #60, 1937
Anonymous 15 Collector


Usage in Models 4= 1935 ; 13= 1936 ; 9= 1937 ; 12= 1938 ; 5= 1939 ; 1= 1940 ; 3= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):47


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