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PT225_4pin

Information - Help 
ID = 20068
       
Country:
Great Britain (UK)
Brand: Lissen Ltd.; London and Richmond, Surrey
Tube type:  Vacuum Pentode   Power/Output 
Identical to PT225_4pin
Similar Tubes
Other base:
  PT225

Base Europe 4-Pin (A, 4A, B4, since 1914) Sidecontact
Filament Vf 2 Volts / If 0.25 Ampere / Direct / Battery =
Description

Pa <1.5W, Va=Vg2 <150V

Typ Ia=8mA, Ig2=2, Vg1=-6, Rload=18.7k, Pout=400mW.

 
Text in other languages (may differ)
Literature The Wireless World, London (WW, 79)   Nov 1934
- - Manufacturers Literature   1930
 
pt225_1~~1.jpg
PT225_4pin: Frank Cuffe
Frank Cuffe

 
pt225_1~~1.png
PT225_4pin: own collection
Peter den Boer



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