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CV9850 quick heating double tetrode
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This valve measures 77x19mm overall and has a B9A base |
| Filament voltage | 1.6V |
| Filament current | 2.5A |
| Max anode voltage | 300V |
| Max anode dissipation | 5W per anode |
| Max frequency | 200MHz |
| Mutual conductance * | 3.5mA/V |
| Inner amplification factor * | 7.5 |
| Max bulb temperature | 225°C |
| Max pins temperature | 120°C |
| Capacitances | |
| Ca,g1 (each section) | 100 mpF |
| Cout (each section) | 3.2pF |
| Cin (each section) | 8.5pF |
| Ca",g' | 100mpF |
| Ca',g" | 100mpF |
| Cg1',g1" | 2.4pF |
| Ca',a" | 75mpF |
At Va=200, Vg2=200, Ia=30mA
| Pin | Function |
| 1 | Control grid " |
| 2 | Filament + shield |
| 3 | Control grid ' |
| 4 | Filament + shield |
| 5 | Filament |
| 6 | Anode " |
| 7 | Screen grids |
| 8 | Anode ' |
| 9 | Filament + shield |
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