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CV2390 power amplifier pentode

This valve measures 53x17mm overall and has a B7G base

Filament voltage (series)2.8V
Filament current (series)100mA
Filament voltage (parallel)1.4V
Filament current (parallel)200mA
Max anode voltage165V
Max screen voltage150V
Max anode dissipation2.2W
Max screen dissipation1.0W
Max cathode current27mA
Mutual conductance *2.0mA/V
Anode impedance *0.1MΩ
Capacitances (measured with valve unscreened)
Cin (nom)4.8pF
Cout (nom)4.2pF
Ca,g1 (max)0.35pF

*: At Va=150, Vg2=90, Vg1=-8.4 (Ia=13.3mA, Ig2=2.3mA)
1Filament *
3Screen grid
4Control grid
5Filament and suppressor grid *
7Filament (+)

*: Pin 1 is filament negative for Vf=2.8V. Pin 5 is filament negative for Vf=1.4V


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