CV2020 RF pentode
 |
This valve measures 46x22mm
overall and has 8 tags. |
This is a CV850 with tags welded to the pins intended to be mounted in a B7G solder-in holder.
The CV850 marking has been painted over and the box updated to match
| Heater voltage |
6.3V |
| Heater current |
175mA |
| Max anode voltage |
200V |
| Max anode dissipation |
1.85W |
| Max cathode current |
20mA |
| Max screen voltage |
155V |
| Max screen dissipation |
0.55W |
| Max heater-cathode voltage |
100V |
| Mutual conductance * |
5.0mA/V |
| Anode impedance * |
340k ohms |
| Max operating frequency |
400MHz |
| Capacitances
(with close fitting metal can) |
| Cag1 max |
0.020pF |
| Cae nom |
3.0pF |
| Cge nom |
3.9pF |
*: At Va=Vg2=120V , Vg1=-2V
| Tag |
Function |
| 1 |
Control grid |
| 2 |
Cathode and suppressor
grid |
| 3 |
Heater |
| 4 |
Heater |
| 5 |
Anode |
| 6 |
Screen grid |
| 7 |
Cathode and suppressor
grid |
| An 8th tag connects to the metal spigot in the centre of the disc attached to the base pins. |
|
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