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ID = 1537
Brand: Osram GmbH KG; Berlin
Tube type:  Current Regulator, Urdox without FeH   Power-supply 
Identical to U918
Similar Tubes
Differences not known by us:

Base Edison small E10 = 10 mm (Codex=Edison 10 mm)
Was used by Radio/TV-reception etc.
Filament If 0.18 Ampere / Specified current AC/DC ~ = (Series working)

0,18 A bei 7...11 V
Netzspannung: 110 V
Im Röhren-Handbuch Funk-Verlag 1951 wird die Röhre mit Europa 3-pin Sockel erwähnt.

Tube prices 2 Tube prices (visible for members only)
Information source Ballast Tube Handbook, The   Hönger, Hilfsröhren, 1946
Taschenbuch zum Röhren-Codex 1948/49   
Röhren-Taschenbuch (frühe Ausgaben, spätere siehe andere Einträge)

U918: Schema 165gwk
Egon Strampe

sockel_11_kopie~~10.png U918: Beier, Röhrentaschenbuch 1958
Oskar Elm

Just Qvigstad
U918: Osram, Liste #60, 1937
Anonymous 15 Collector

Usage in Models 8= 1933 ; 6= 1934 ; 3= 1935 ; 1= 1936

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):18

Collection of



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