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GMI-37A
TRIODE
The GMI-37A triode is used for power switching in pulse modulators in RF equipment
GENERAL
Cathode: directly heated, carbonized thoriated tungsten
Envelope: metal-ceramic
Cooling: water
Height: at most 785 mm
Diameter: at most 271 mm
Mass: at most 32 kg
00011.jpg)
00012.jpg)
K1 - cathode; K2 - cathode (connected with pump cathode); C - grid; A - anode; 1 - anode of magnetic electric-discharge pump
| OPERATING ENVIRONMENTAL CONDITIONS | |
| Ambient temperature, °C | -60 to +85 |
| Relative humidity at +40 °C, % | 95-98 |
|
BASIC DATA Electrical Parameters |
|
| Filament voltage (AC or DC), V | 26 |
| Filament current, A | 650-790 |
| Peak (excess) grid voltage, kV | 2.25 |
| Negative cutoff voltage, absolute value (at anode voltage 55 kV, anode current 25 mA), kV, at most | 4.3 |
| Peak anode current (at anode voltage 10 kV, grid voltage -1 kV, filament voltage 26 V, pulse duration 10 µs, pulse frequency 100 Hz, reservoir capacitor 50 µF in anode circuit), A, at least | 1,000 |
| Peak grid current (at anode voltage 10 kV, grid voltage -1 kV, pulse duration 10 µs, pulse frequency 100 Hz, reservoir capacitor 50 µF in anode circuit), A, at most | 180 |
| Warm up time, s, at most | 60 |
| Interelectrode capacitance, pF: | |
| input, at most | 450 |
| output, at most | 15 |
| transfer, at most | 150 |
| Limit Operating Values | |
| Filament voltage (AC or DC), V | 24.7-27.3 |
| Maximum filament starting current, A | 1,150 |
| Anode voltage, kV | 50 |
| Negative grid voltage, absolute value, V | 4.3 |
| Peak (excess) grid voltage, kV | 2.5 |
| Dissipation, kW: | |
| anode | 50 |
| grid | 1 |
| Maximum pulse duration, µs | 100 |
00021.jpg)
Averaged Characteristic Curves Showing Negative Grid Voltage versus Anode Voltage
00022.jpg)
Averaged Characteristic Curves:
Uf = 26V;
_____ Ia;
- - - Ib