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CV2390 power amplifier pentode
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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 voltage | 165V |
| Max screen voltage | 150V |
| Max anode dissipation | 2.2W |
| Max screen dissipation | 1.0W |
| Max cathode current | 27mA |
| 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)
| Pin | Function |
| 1 | Filament * |
| 2 | Anode |
| 3 | Screen grid |
| 4 | Control grid |
| 5 | Filament and suppressor grid * |
| 6 | Anode |
| 7 | Filament (+) |
*: Pin 1 is filament negative for Vf=2.8V. Pin 5 is filament negative for Vf=1.4V
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