GI-46B (original box)

The GI-46B (ГИ-46Б rus.) pulse generator triode in ceramic-metal design with forced air cooling for operation in the decimeter frequency range. Designed to generate and amplify high-frequency oscillations in continuous and pulsed operating modes in the range from 300MHz to 1050MHz with an output power per pulse up to 30kW with anode modulation.
The GI-46B triode is used for operation in self-excited generators and amplifiers.
Forced air cooling not less than 24 m³/h.

Stamp of technical control department of the manufacturer “ ОТК “ 

GI – generator pulse;
46 – the number of the serial number of the development of this type of tube;
B – a letter indicating the type of forced cooling: B – air.

Technical specifications:

• Filament current: 2.45 ± 0.15A
• The working point is negative: 7.05 ± 1.35V
• The slope of the characteristic: 21.5 ± 4.5 mA/V
• Reverse grid current: no more than 40μA
• Cathode emission current at Uа = Uс = 400V – not less than: 24A
• Permeability when Ua changes by 200V – 0.6 ± 0.2%

Interelectrode capacities:

• input: 16.5 ± 2pF
• straight line: 5.75 ± 0.65pF
• useful power: not less than 96W
• negative working point: 7 ± 3V

Limiting performance:

• Glow voltage: 7.7 V – 13.9V
• Anode voltage: 1.9 kV
• The pulse voltage of the anode: 15 kV
• The power dissipated by the anode: 350W
• The power dissipated by the grid: 20W
• DC anode current: 350mA
• Anode current in a pulse: 15A
• The duty cycle of the GI-46B triode: 500
• The pulse duration: 15 μs.
• Resistance in the grid circuit: 10 kOhm
• The temperature of the anode with drawal: + 200°C

Operating time not less than 1000 hours.