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CV631 / 828 pentode

This valve measures 195x48mm overall and has a 5-pin base

This valve is described as a transmitting beam power amplifier. Inspection of the electrode structure shows it to be a pentode.

Filament voltage 10V
Filament current 3.25A
Max anode dissipation 70W
Typical operating conditions
Anode voltage 1250V
Anode current 160mA
Power output 150W
Control grid voltage -95V
Control grid current 15mA
Screen grid voltage 400V
Cag 0.07pF
Cgf 12pF
Caf 14pF


Pin Function
1 Filament
2 Screen grid
3 Control grid
4 Suppressor grid
5 Filament
TC Anode


This file was last modified23:10:35, Wednesday February 23, 2022