GMI -27B impulse modulator tetrode designed for impulse modulators.
Envelope – metal-glass.
Cooling – air-forced:
- anode - 50 m3/h
- pin 20 m3/h
Weight - 650 g
| Basic Electrical Parameters: | |
| Filament current | 6,25±0,5 A |
| Anode pulse current | min 20 A |
| Anode pulse current (at Un=12 V) | max 18 A |
| Second grid peak current | max 2 A |
| First grid peak current | min 3 A |
| First gird negative cutoff voltage | max 500 V |
| Warm-up time | max 3 min |
| Interelectrode capacitance, pF: | |
| - input | 70±10 |
| - output | 13±3 |
| - transfer | max 1 |
| Service life-time | min 1000 h |
| OperationalLimits: | |
| Filament voltage | 12 - 13,8 V |
| Anode voltage | 10 kV |
| Second grid voltage | 1 kV |
| First grid negative voltage | 0,8 kV |
| Firstgridpeakvoltage | 150 V |
| Anode dissipation | 250 W |
| Second grid dissipation | 15 W |
| First grid dissipation | 3 W |
| Peak cathode current at 1/duty factor up to 500 | 34 A |
| Impulse duration | 30 us |
| Tube temperature | 150 С |
| Operating ambient temperature range | from -60 to +85 С |
