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CV1567 / DET25 triode
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This valve measures 175x55mm overall and has a 4 pin base. |
The CV Register indicates that the CV1567 is based on or
equivalent to CV1025; the EVS sheet for CV1025 indicates it is a DET25.
This valve carries both DET25 and CV1567 part numbers.
| Filament voltage |
7.5V |
| Filament current |
1 to 3A |
| Max anode voltage |
1200V |
| Max anode dissipation |
36W |
| Mutual conductance * |
2.1mA/V |
| Anode impedance * |
4800 ohms |
| Amplification factor * |
10 |
| Maximum frequency |
15MHz |
| Capacitances |
| Cae |
4.5pF |
| Cge |
6.0pF |
| Cag |
7.0pF |
*: At Va=1200, Ia=30mA
This valve was developed from the DET1 with an
M-shaped filament giving better mutual conductance the grid and anode
are far wider in cross section. The anode is carbonised nickel.
| Pin |
Function |
| 1 |
Anode |
| 2 |
Filament |
| 3 |
Filament |
| 4 |
Grid |
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