CV1120 / CV1290 halfwave rectifier
 |
The valve measures approx 135x45mm and has a 4-pin base |
See below for more examples of this valve.
| Heater voltage | 2V |
| Heater current | 1.5A |
| Max applied RMS voltage | 5kV |
| Max working PIV | 14kV |
| Max no-load PIV | 15kV |
| Max mean DC rectified current | 5mA |
| (CV1290/SU2150A version) | 10mA |
| Max peak anode current | 100mA |
| Max reservoir capacitor | 0.25µF |
| Min limiting resistance introduced externally | 10k ohm |
Internal views. The mica shield presumably protects the electrode structure from the getter.
| Pin | Function |
| 1 | n/c |
| 2 | n/c |
| 3 | Heater/Cathode |
| 4 | Heater |
| TC | Anode |
The CV Register shows the CV1290 as equivalent to the SU2150A, and the CV1120 as a possible replacement. However the example in the first picture above shows both SU2150A and CV1120. See also CV1001
CV1290
