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UY-47B

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ID = 25246
       
Country:
Japan
Brand:
Developer: Tokyo Electric Co. (TEC); Tokyo 
Tube type:  Vacuum Pentode   Power/Output 
Identical to UY-47B = UY-247B
Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.75 Ampere / Direct
Description

This tube was a Power Amplifier. Firat made in 1934. "Dawn of Tube Production in Japan" shows the filament current as .5 v.

 
Text in other languages (may differ)
Information source -- Collector info (Sammler)   
-- Collector info (Sammler)   Dawn of Tube production in Japan
47_uy247.png UY-47B: Fin Stewart
Fin Stewart

Just Qvigstad
Usage in Models 1= 1936? ; 1= 1937?? ; 1= 1938?? ; 1= 1938 ; 1= 1939
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

Christian Schaufelberger (CH)
 
uy47b.jpg

UY-47B
 
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