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994V

Information - Help 
ID = 3001
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Triode, vacuum   Detector 
Identical to 994V
Similar Tubes
Normally replaceable-slightly different:
  ACHF

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.65 Ampere / Indirect / Specified voltage AC/DC
Description

High impedance triode.
Röhren-Codex is wrong. Heater current is 0.65A (Manufacturers data and actual test data)
Typical Operating data Va =200; Ia =1.35mA; Ra =35k; gm =3.6.

 
Information source History of the British Radio Valve to 1940   p. 178
Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature

994v_so.png 994V: rtt
Anonymous 10 Collector


Just Qvigstad
Usage in Models 1= 1933? ; 3= 1933 ; 1= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

 
994v_top.jpg

994V
 

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