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IW2

Information - Help 
ID = 7940
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  High-vacuum Rectifier   Power-supply 
Identical to IW2
Similar Tubes
Normally replaceable-slightly different:
  SSIH60/250

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Em)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.2 Ampere / Half indirect
Description

250V rms; 60mA dc mean.

 
Dimensions (WHD)
incl. pins / tip
x 121 x 50 mm / x 4.76 x 1.97 inch
Weight 44 g / 1.55 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
iw2.jpg
IW2: Sammlung GJ
Anonymous 544 Collector

 
150_5.png
IW2: Telefunken Werkstattbuch
Wolfgang Bauer

 

from Just Qvigstad

Usage in Models 1= 1934

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

Collection of a member from D

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