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GM-2A

TRIODE

The GM-2A triode is used in electronic current and voltage regulators in RF equipment

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: glass-to-metal.
Anode cooling: forced liquid.
Height: at most 200 mm.
Mass: at most 1.25 kg

gm-2a(1)00051.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequencies, Hz 20-150
acceleration, m/s² 25
Multiple impacts with acceleration, m/s² 98
Linear loads with acceleration, m/s² 98
Ambient temperature, °C -50 to +70
Relative humidity at up to +25 °C, % 98

BASIC DATA
Electrical Parameters
Filament voltage, V 6.3
Filament current, A 28-34
Mutual conductance (at anode voltage 4 kV, anode currents 0.7 and 0.5 A), mA/V 14-18
Gain coefficient (at anode voltages 4 and 5 kV, anode current 0.7 A) 48-62
Interelectrode capacitance, pF:
input, at most 25
output, at most 1
transfer,at most 16
Mutual conductance over 500 h of service, mA/V, at least 13

Limit Operating Values
Filament voltage, V 5.7-6.9
Anode voltage, kV:
at anode dissipation 3.5 kW 6.5
at anode dissipation 1 kW 8
Grid voltage, V -500
Filament starting current, A 50
Dissipation, W:
anode 3.5x10³
grid 50
Warm up time, s, at least 30
Temperature, °C:
envelope and seals 150
leads of grid and cathode 180

gm-2a(2)00061.jpg
Averaged Anode Characteristic Curves:
Uf = 6.3V;
Pa max

gm-2a(2)00062.jpg
Averaged Characteristic Curves:
Uf = 6.3V;
_____ anode-grid;
_ _ _ grid