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ГИ44Б Параметры и характеристики .  
GI44B Electron tube. Generating Thetrode in metalceramic performance with separate cathode. Air cooling. Tube is designed for amplification of high frequency pulses with short offduty factor by driving of 2nd grid. Minimum life time = 1000 hours. Maximum stock time = 12 years. Limit values: Anode voltage = no more than 3700 V Anode voltage with 400 and more offduty factor = no more than 4000 V 2nd grid voltage = no more than 800 V 2nd grid voltage with 400 and more offduty factor = no more than 850 V Anode voltage without anode current (closed tube) = no more than 4200 V 1st grid bias voltage = 100 V ... 0 V 2nd grid blocking voltage = no more than 60 V Heater voltage = 6.0 ... 6.6 V Anode pulse current = no more than 2.25 A 1st grig pulse current (Ug2=800 V) = no more than 0.9 A 2nd grig pulse current = 0.3 ... 0.3 A Anode dissipation = 100 Watt 1st grid dissipation = 3 watt 2nd grid dissipation = 3 watt Maximum driving power in pulse at f=1667 MHz = 225 Watt Optimum driving power in pulse at f=1667 MHz = 200 Watt Maximum driving power in pulse at f=3000 MHz = 400 Watt Output power at f=1667 MHz = at least 3500 Watt Output power at f=3000 MHz = 1365 ... 3000 Watt Offduty factor at f=1667 MHz = at least 80 Offduty factor at f=3000 MHz = at least 200 Pulse duration = no more that 15 mks Heating time = no more that 90 sec Maximum allowable temperature of the tube = 200 degree of Celsius  
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