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991

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ID = 12092
       
 
   
Tube type:  Voltage Regulator, single   Power-supply 
Identical to 991 = NE16 = CV651
First Source (s)
1943 : -- Original-techn. papers. RETMA registration
Base Swan-Bajonett B15 (Codex=Sw)
Was used by Military and/or Government
Filament --/--
Description

The 991 with bayonet base and registered to RCA in 1943, was intended as voltage regulator. 87V minimum firing, 48 to 67V stabilized voltage at 0.4 to 2mA.
Used among the others in the BC-348.

 
Tube prices 3 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
991_sock.png 991: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

Just Qvigstad 		991.png
991: Manufacturer's Literature
Emilio Ciardiello
Usage in Models 1= 1936? ; 1= 1936 ; 1= 1938?? ; 1= 1938 ; 1= 1940? ; 1= 1940 ; 1= 1941? ; 1= 1942? ; 1= 1945?? ; 1= 1946? ; 1= 1946 ; 2= 1947?? ; 2= 1947 ; 1= 1949?? ; 1= 1949 ; 1= 1950?? ; 1= 1951 ; 1= 1952 ; 1= 1956? ; 1= 1958
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):22

Collection of

John Albion (CDN)
Emilio Ciardiello (I)
Collection of a member from FIN
 
991pix.jpg

991
 
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