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CV2411 output pentode

Size
This valve measures 65x19mm overall and has a B9A base

Heater voltage12.6V
Heater current150mA
Max anode voltage (Ia=0) (a)550V
Max screen voltage (Ig2=0) (a)550V
Max anode operating voltage (a)275V
Max screen operating voltage (a)275V
Max anode dissipation (a)9.5W
Max screen dissipation (a)2.0W
Anode current (b)27mA
Mutual conductance (b)3.2mA/V
Inner amplification factor (b)8.5
Max cathode current (a)42mA
Max heater-cathode voltage (a)65V
Power output (d)80mW
Capacitances (c)
Cag max0.75pF
Cin7.5pF
Cout6.2pF

(a) Absolute maximum values

(b) Measured at Va=Vg2=250V and Rk=550 ohms

(c) measured without a metal screen

(d) Measured at Va=Vg2=50V, Vg1=3.3V, Ra=12.5k ohms and V in = 1.8V r.m.s.



PinFunction
1i/c
2Control grid
3Cathode + suppressor grid
4Heater
5Heater
6i/c
7Anode
8Screen grid
9Heater centre tap

The valve carries the markings 'Ef0 R7L' and the letter 'G'

CV2411

This file was last modified15:10:34, Tuesday September 02, 2014