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DFA6

Information - Help 
ID = 46493
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Power/Output 
Identical to DFA6

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.85 Ampere / Direct / Battery =
Description

"A Power amplifier with a very large emission, suitable for operating with anode voltages up to 400 volts. It can also be used as a low power transmitter dissipating 10 watts continuously with perfect safety." Mullard.

Va < 400; Ra 4500 ohms, 1.45mA/V at Va=100 and Vg=0

 

Filament current of 0.85A is a maximum figure. DFA series = Dull Filament Amplifying

 
Information source - - Manufacturers Literature   Advertisement May 1930

b4_base_pins~~93.png DFA6: Fin Stewart
Fin Stewart


Just Qvigstad
 
mullard_dfa6.jpg

 

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