GMI32B-1
Impulse modulating tetrode for impulse modulators.
Forced air cooling: anode – 100 m3/h, stem – 30 m3/h
Mass 4 kg
Main parameters (at Uf=27 V, Ua=4 kV, Ug2=1.75 kV, Ug1=700 V, Ug1 imp=150 V)
| Filament current. A | 10±0.7 |
| Anode impulse current at Uf=24.3 V at Uf=27 V | ≥40 ≥50 |
| 1st grid impulse current, A | ≤6 |
| 2nd grid impulse current, A | ≤3 |
| Cutoff voltage (at Ia=1 mA), V | ≤600 |
| Warm-up time, min | ≤3 |
| Interelectrode capacitance, pF input output input-to-output | 160±20 20-7/+8 ≤1 |
| Durability, h | ≥1000 |
| Durability test impulse anode current, A | ≥40 |
Operational limits
| Filament voltage, V | 24.2..29.7 |
| Anode voltage, kV | 40 |
| 2nd grid current, kV | 2 |
| 1st grid negative current, kV | 800 |
| 1st grid impulse current, kV | 175 |
| Anode power dissipation, kW | 2 |
| 2nd grid power dissipation, W | 35 |
| 1st grid power dissipation, W | 7 |
| Cathode impulse current at pulse ratio 200, A | 59 |
| Impulse duration (at impulse anode current 50 A), µs | 10 |
| Minimum pulse ratio (at impulse anode current 50 A) | 200 |
| Ambient air temperature, oC | -60..+85 |
| Linear acceleration, g | 25 |
| Vibratory loads frequency, Hz acceleration, g | 5..200 7.5 |
| Multiple mechanical impacts acceleration, g | 35 |
| Single mechanical impact acceleration, g | 150 |
