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12AX4

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ID = 35285
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Damper, booster, flyback diode 
Identical to 12AX4 = 12AX4GT
Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Indirect / Specified voltage AND current AC/DC
Description There is no metal tube 12AX4, see under 12AX4GT, 12AX4GTA and 12AX4GTB 
Text in other languages (may differ)
12ax4.png
12AX4: Schematic from my documents.
Pier Antonio Aluffi

Just Qvigstad
Usage in Models 1= 1950?? ; 4= 1955? ; 24= 1956?? ; 17= 1956? ; 8= 1957? ; 1= 1958?? ; 7= 1958? ; 3= 1960? ; 7= 1960 ; 1= 1961?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):73
 
12ax4~~1.jpg

 
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