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GU-22A

TRIODE

The GU-22A triode is used as an amplifier or oscillator at frequencies up to 26 MHz in grounded-grid circuits, in stationary RF equipment.

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: glass-to-metal.
Cooling: forced (water for anode, air for envelope and seals).
Height: at most 355 mm.
Diameter: at most 120 mm.
Mass: at most 5 kg.

gu-22a(1)1.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Ambient temperature, °C 5-50
Relative humidity at up to +25 °C, % 98

BASIC DATA
Electrical Parameters
Filament voltage, V 8.3
Filament current, A 140-160
Mutual conductance (at anode voltage 5 kV, anode currents 2 and 4 A), mA/V 28-35
Gain coefficient (at anode voltages 5 and 8 kV and anode current 2 A) 41-58
Anode current at zero grid voltage (at anode voltage 5 kV), A 1.1-2.3
Interelectrode capacitance, pF:
input, at most 55
output, at most 1.5
transfer, at most 45

Limit Operating Values
Filament voltage, V 7.8-8.3
Anode voltage, kV 10
Filament starting current, A 225
Dissipation, W:
anode 20
grid 0.6
Pulse duration, µs 1.000
Operating frequency, MHz 26
Temperature at envelope, stem and seals, °C 150