|
VT81 triode
 |
This valve measures 108x40mm overall and has a B4 base. |
This is a GPO specification directly heated triode valve.
| Filament current |
250mA |
| Nominal filament voltage |
4V |
| Max anode voltage |
160V |
| Max anode dissipation |
2.5W |
| Anode impedance * |
5500 ohms |
| Amplification factor * |
12 |
| Capacitances |
| Cag (nominal) |
9.6pF |
| Cae (nominal) |
4.3pF |
| Cge (nominal) |
8.1pF |
*: At Va=130, Vg=-4.5
| Pin |
Function |
| 1 |
Anode |
| 2 |
Grid |
| 3 |
Filament -ve |
| 4 |
Filament +ve |
|
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