CV2128 triode/heptode
 |
This valve measures 65x19mm
overall and has a B9A base. |
| Heater voltage |
6.3V |
| Heater current |
300mA |
| Heptode section |
| Max anode voltage (Ia=0) |
600V |
| Max anode voltage |
330V |
| Max anode dissipation |
1.9W |
| Max screen voltage (Ia=0) |
600V |
| Max screen voltage (Ia=1mA) |
330V |
| Max screen voltage |
140V |
| Max screen dissipation |
1.1W |
| Mutual conductance (Va=250;
Vg2=100; Ia=6.5ma) |
2.4mA/V |
| Triode section |
| Max anode voltage (Ia=0) |
600V |
| Max anode voltage |
275V |
| Max anode dissipation |
0.9W |
| Mutual conductance (Va=100;
Ia=13.5mA) |
3.7mA/V |
| Capacitances |
| Cin (heptode) |
4.8pF |
| Cout (heptode) |
7.9pF |
| Cag1 max (heptode) |
0.01pF |
| Cin (triode) |
2.7pF |
| Cout (triode) |
2.3pF |
| Cag (triode) |
1.0pF |
| Cg3 - rest (heptode) |
6.0pF |
| Cg1-g3 max (heptode) |
0.3pF |
| Cg1-(g3+g) max |
0.45pF |
| Pin |
Function |
| 1 |
Heptode G2 and G4 |
| 2 |
Heptode G1 |
| 3 |
Cathode, shield and Heptode
G5 |
| 4 |
Heater |
| 5 |
Heater |
| 6 |
Heptode anode |
| 7 |
Heptode G3 |
| 8 |
Triode anode |
| 9 |
Triode grid |
|
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