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AF

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ID = 6947
       
Country:
United States of America (USA)
Brand: Arcturus Radio Tube Co.; Newark, NJ
Developer: Arcturus Radio Tube Co.; Newark, NJ 
Tube type:  Full-Wave Mercury-Vapor Rectifier   Power-supply 
Identical to AF = NU-82
Similar Tubes
Normally replaceable-slightly different:
  82 ; G-82
First Source (s)
1929 : Saga of the Vacuum Tube, Tyne p.342

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 3 Ampere / Direct / Parallel / series AC/DC
Description

This tube was released by Arcturus in 1932. It is used in larger radios and class B power amplifiers where thr B current is high. TYhere is an internal fuse in one of the "leading-in" wires in the base, to protect the power transformer if the tube suffers a short circuit.

 
Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 49 g / 1.73 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Collector info (Sammler)   
 
af_a.jpg
AF: scc
Christian Schaufelberger

 
429_6.png
AF: Telefunken Werkstattbuch
Wolfgang Bauer

 

from Just Qvigstad

Usage in Models 1= 1965?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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