CV4009 reliable
variable-µ HF pentode
 |
This valve measures 59x17mm
overall and has a B7G base. |
This valve was developed from
the CV454.
| Heater voltage |
6.3V |
| Heater current |
300mA |
| Max heater-cathode voltage |
+/- 150V |
| Max operating anode voltage |
330V |
| Max anode voltage (Ia=0) |
500V |
| Max anode dissipation |
3.3W |
| Max operating screen voltage |
135V |
| Max screen voltage (Ig2=0) |
330V |
| Max screen dissipation |
700mW |
Mutual conductance
(Va=250, Vg2=100, Ia=11mA, Ig2=4.2mA) |
4.4mA/V |
| Max bulb temperature |
165C |
| Max shock (short duration) |
500g |
| Max acceleration (continuous
operation) |
2.5g |
| Inner amplification factor |
24 |
| Mutual conductance (g1=-20V) |
40µA/V |
| Anode impedance |
1M ohm |
| Capacitances
(measured without screening can) |
| Cin nom |
5.5pF |
| Cout nom |
5.0pF |
| Ca, g1 max |
0.0035pF |
| Pin |
Function |
| 1 |
Control grid |
| 2 |
Suppressor grid |
| 3 |
Heater |
| 4 |
Heater |
| 5 |
Anode |
| 6 |
Screen grid |
| 7 |
Cathode |
|
The Chelmer example above is
taller than the Brimar specimen below which measures 54x17mm.
|
