Description
The GMI-2B pulsed modulator tetrode in glass design with indirectly heated oxide cathode and forced air cooling. Designed to work as a modulator in circuits with a partial discharge of a storage capacity at an anode voltage in a pulse of not more than 36kV and a current in a pulse of up to 110A. The GMI-2B pulsed modulator tetrode is used in general-purpose stationary radio equipment.
Available in glass design with 6 electrode leads and a separate anode lead.
Works in a vertical position, pins down.
Forced air cooling 200 m³/h.
- Stamp of technical control department of the manufacturer ” ОТК “
Technical specifications:
- Heater voltage (AC or DC): 25V
- Heater current: 15.8 – 19.2A
- Anode voltage (DC): 32kV
- Grid 2 voltage (DC): 2kV
- Grid 1 voltage (DC): 600V
- Peak grid 1 excess voltage: 200V
- Peak anode current, at least: 90A
- Anode current (average value), at least: 140mA
- Grid 1 current (average value), at least.: 1mA
- Grid 2 current (average value), at least: 30mA
- Negative cutoff voltage (at anode current 1mA), at most: 570V
- Anode load resistance: 300Ohm
- Reservoir capacitor in anode circuit: 0.05pF
- Pulse duration: 0.65 – 1.1pF
- Pulse 1/duty factor: 570 – 615pF
- Interelectrode capacitance input, at most: 350pF
- Interelectrode capacitance output, at most: 125pF
- Interelectrode capacitance transfer, at most: 10pF
Limit Operating Values
- Heater voltage (AC or DC): 23.7 – 26.3V
- Minimum grid 1 voltage (DC): -600V
Dissipation: - anode: 900W
- 2 grid: 80W
- 1 grid: 12W
- Peak anode current: 110A
- Pulse duration: 0.3 – 2µs
- Temperature of anode face: 120°C
Operating time not less than 400 hours.
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