GU-50
Generator pentode GU-50 is designed to amplify power and generate high-frequency oscillations in transmitting devices and low-frequency amplifiers for power amplification.
Constructive design - glass.
Working position - vertical, leads down.
Cathode - indirectly heated oxide.
Durability - at least 1750 hours.
Weight - no more than 100 g.

Main technical parameters of GU-50:
at Un = 12.6 V, Uа = 0.8 kV, Uc2 = 0.25 kV, Uc3 = 0V, Iа = 50 mA
Filament current 0.705 ± 0.065 A
Anode current not less than 50 mA
1st grid current no more than 8 mA
2nd grid current no more than 5 mA
The current of the 1st grid is reverse (at Ic2 = 15 mA) no more than 15 μA
Reverse grid current (at Ic2 = 15 mA) no more than 25 μA
Leakage current between the cathode and the heater is not more than 100 μA
Permeability of the 1st mesh relative to the 2nd mesh 19 ± 3%
The voltage of the 1st grid at the operating point is negative 40 ± 10 V
Closing voltage of the 3rd grid negative 205 ± 55 V
Slope 4 ± 1 mA / V

Oscillatory power:
     - at Un = 12.6 V not less than 60 W
     - at Un = 10.8 V not less than 52 W

Interelectrode capacitances, pF:
     - grid - cathode 14 ± 1
     - anode - cathode 9.15 ± 1.15
     - mesh - anode no more than 0.1

Limiting performance characteristics of the GU-50:
Filament voltage 10.8 - 14.5 V
Anode voltage 1 kV
2nd grid voltage 0.25 kV
Voltage between cathode and heater 200 V
Anode current 230 mA
Power dissipated by the anode 40 W
Power dissipated by the 2nd grid 5 W
Power dissipated by 1st grid 1 W
Cylinder temperature 200 С
Ambient operating temperature range
from -60 to +100 С