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302

Information - Help 
ID = 18033
       
Country:
Great Britain (UK)
Brand: GEC, General Electric Co Ltd., GENALEX; London
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to 302

Base Edison big E27 = 27 mm
Was used by Radio/TV-reception etc.
Filament If 0.3 Ampere / Direct / Specified voltage AC/DC
Description Manufactured by the General Electric Company in England. The large version of this tube was made from c. 1935 to 1945. following this a smaller version of the tube was made with a diameter of 55 mm. (see Variant) The smaller tube was also sold with the Philips brand but made by GEC. These tubes were used extensively in ac/dc radios, particularly in Australia and New Zealand.
Voltage range 112-195 for 5% current stability. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
57 x 125 x mm / 2.24 x 4.92 x inch
Weight 47 g / 1.66 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
Ballast Tube Handbook, The   
- - Manufacturers Literature


Just Qvigstad
302_data.png
302: AWV Radiotron Valve Data Book
Stuart Irwin

More ...
Usage in Models 1= 1937? ; 4= 1937 ; 26= 1938 ; 26= 1939 ; 2= 1940? ; 13= 1940 ; 1= 1941? ; 6= 1941 ; 9= 1946 ; 5= 1947 ; 1= 1948?? ; 3= 1948

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):97

Collection of

 
302.jpg

302
 

Variants

From 1945 a smaller version of this tube was made with a diameter of 55 mm. The filament of this tube consisted of eight single coiled iron wires mounted vertically and connected in series. The tube was still listed in the Philips "Miniwatt Technical data handbook, 7th edition 1962



Forum contributions about this tube
302
Threads: 1 | Posts: 2
Hits: 2689     Replies: 1
302 (302)
Joachim Glüder
22.Feb.10
  1

Hier passt etwas nicht: Während diese Röhre 302 als Widerstandsröhre bezeichnet wird, sollen die verlinkten Äquivalenztypen Sendetrioden sein.

J.G.

Konrad Birkner † 12.08.2014
22.Feb.10
  2

Schon repariert.                                                                        

Danke,
KOBi

 
302
End of forum contributions about this tube

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