Virtual Valve Museum

Virtual Valve Museum

HomeFull List

This is an archive website. It will not receive any updates, additions or corrections.

CV2238 audio output pentode

Size
This valve measures 36x9x6mm overall and has 5 leads

Filament voltage1.25V
Filament current50mA
Max anode voltage100V
Max screen voltage100V
Anode current *3.1mA
Screen current *0.95mA
Mutual conductance *0.65mA/V
Max cathode current5.5mA

*: At Va=Vg2=67.5, Vg1=-6.5
LeadFunction
1Anode (marked by red spot)
2Screen grid
3Filament +ve
4Control grid
5Filament -ve and suppressor grid

CV2238