CV18 double triode
 |
This valve measures approx 130x46mm overall and has a 7 pin base. |
This valve was used in the output stage of the Spitfire radio.
| Heater voltage | 6.3V |
| Heater current | 800mA |
| Max anode voltage | 300V |
| Max anode dissipation,per anode | 5.0W |
| Mutual conductance * | 2.8mA/V |
| Anode impedance * | 5000 ohms |
| Amplification factor * | 14 |
| Max operating frequency | 175MHz |
| Capacitances (apply to each half) | |
| Ca-c+h | 0.6pF |
| Cg-c+h | 4.1pF |
| Cag | 2.45pF |
| Ca1-a2 | 1.1pF |
*: At Va=250, Vg=-7
| Pin | Function |
| 1 | Heater |
| 2 | n/c |
| 3 | Grid 1 |
| 4 | Cathode |
| 5 | Grid 2 |
| 6 | n/c |
| 7 | Heater |
| TC1 | Anode 1 |
| TC2 | Anode 2 |
