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304

Information - Help 
ID = 18035
       
Country:
Germany
Brand:
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to 304 = CV1202
Base Edison big E27 = 27 mm (Codex=Edison 10 mm)
Was used by Radio/TV-reception etc.
Filament If 0.3 Ampere / Specified current AC/DC ~ = (Series working)
Description

300mA stabilised current at 95 to 165V.

 
Text in other languages (may differ)
Information source British Radio Valves - The Classic Years: 1926-1946   Supplement, p. 156
Ballast Tube Handbook, The   
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
baretter_e27~~10.png 304: Fin Stewart
Fin Stewart

Just Qvigstad 		barretters~~5.png
304: own collection
Peter den Boer
Usage in Models 1= 1935 ; 1= 1936? ; 2= 1936 ; 2= 1937 ; 1= 1938? ; 1= 1939? ; 1= 1939 ; 1= 1940 ; 1= 1946 ; 1= 1947? ; 1= 1948? ; 2= 1948 ; 1= 1949? ; 1= 1949 ; 2= 1950
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):19

Collection of

Pedro Prieto-Castro (E)
 
e_osram_304.jpg

304
 
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