CV1630 / 5C/450A pentode
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This valve measures 310x110mm overall and has a 4 pin base |
This is described as an RF suppressor modulated pentode
| Filament voltage | 10V |
| Nominal filament current | 13A |
| Max usable emission | 7A |
| Max anode voltage * | 3kV |
| Max screen voltage * | 650V |
| Max anode dissipation * | 450W |
| Max screen dissipation * | 100W |
| Mutual conductance ** | 6.5mA/V |
| Max anode voltage at 20MHz | 2.25kV |
| Capacitances | |
| Cag (max) | 0.2pF |
| Cae (max) | 30.0pF |
| Cge (max) | 50.0pF |
*: At a max frequency of 10MHz
**: At: Va=2.5kV, Vg2=600V, Vg3=0, Vg1=-90V (AC filament) or -85V (DC filament)
The pins are arranged as follows: when viewed from the base, the pin on its own is the screen grid; the three pins in an arc are filament, control grid, filament. At the top of the valve, the anode connection is above the single base pin, and the suppressor grid the other side.
The envelope incorporates a glass support for the electrode structure.