,Cathode Ray Tubes,Ceramic Tubes,CFA,chemical synthesis,chromenes,CO2 sensors,Communication,composite membranes,condensed heterocycles,Control Tubes,CWT,database,Devices,Diodes,Discharger,Display Tubes,Electron Tubes,Electron,antitumor,artificial organs,artificial skin,Attenuators,Audio tubes,Backward Wave Oscillator,Band filtering,Beam tubes,biocompatibility,biomaterials,biosensors,Broadcast,Broadcasting Tubes,Broadcasting,carbon dioxide isolation3CX300A1,4CX400A,4CX800A,4X150A,6360,6BK4,6BQ7.6C19,6C33C,6D22S,6N1P,6S19P,7034,813,829A,832A,833A,absorbent,Acquisition,Aircraft,Amateur Radio,Amateur,Amplifiers,Antenna amplifiers,anticancer compounds,antitumor agent,Modular Pulse Tubes,Modular,Pulse,Russia,component,Navigator,product,characteristics,tube,technical,information,diagram">

GMI-30

TRIODE

The GMI-30 triode is used as a pulse power switch in pulse modulators in RF equipment

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: glass.
Height: at most 350 mm.
Diameter: at most 140 mm.
Mass. at most: 650 g

gmi-30(1)00081.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Ambient temperature, °C -10 to +55
Relative humidity at up to +25 °C, % 98

BASIC DATA
Electrical Parameters
Filament voltage, V 8.2
Filament current, A 15.9-17.7
Mutual conductance (at anode voltage 2 kV, anode current 50 mA), mA/V 4.8-6.8
Peak cathode emission current (at peak grid and anode voltages 3 kV, pulse duration 5-10 µs, pulse frequency 50 pulses/s), A, at least 20
Peak grid voltage (at anode voltage 3 kV, grid voltage -400 V, peak anode current 15 A, pulse duration 5-10 µs, pulse frequency 50 pulses/s), kV, at most 2
Peak grid current (at anode voltage 3 kV, peak grid voltage at most 2,000 V, peak anode current 15 A, pulse duration 5-10 µs, pulse frequency 50 pulses/s), A, at most 5
Cathode emission current (at filament voltage 4.8 V) over 500 h of service, mA, at most 300
Negative cutoff voltage (at anode voltage 27 kV, anode current 0.5 mA), absolute value, V, at most 1,200
Pulse duration, µs 5-10
Pulse repetition frequency, pulses/s 50
Interelectrode capacitance, pF:
input (grid-cathode) 7-12
output (anode-cathode), at least 2
transfer (anode-grid) 4-6.6

Limit Operating Values
Filament voltage, V 7.9-8.5
Anode voltage, kV 30
Negative grid voltage, absolute value, kV 2
Peak anode current, A 15
Peak grid current A 6
Anode dissipation, W 300
Pulse 1/duty factor, at least 500

gmi-30(2)00091.jpg
Averaged Peak Characteristic Curves:
Uf = 8.2V; Ug = -0.4kV; t = 5 µs; pulse frequency 65 kHz
_____ anode;
_ _ _ grid-anode