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GK-12A

POWER TRIODE

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: metal-ceramic with an external copper anode.
Cooling: forced (water for anode, air for envelope).
Height: at most 400 mm.
Diameter: at most 190 mm.
Mass: at most 15 kg.

gk-12a(1)1.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Ambient temperature, °C -10 to +55
Relative humidity at up to 25 °C, % 98

BASIC DATA
Electrical Parameters
Filament voltage (AC or DC), V 6
Filament current, A 250-300
Mutual conductance (at anode voltage 1 kV, anode currents 5 and 7 A, magnetic field intensity 950±50 Oe), mA/V, at least 45
Gain coefficient (at anode voltages 1 and 5 kV, anode current 5 A, and magnetic field intensity 950±50 Oe), at least 140
Peak anode current (at anode voltage 1 kV, grid voltage -100 V, peak excess grid voltage 1,000 V, magnetic field intensity 950±50 Oe), A, at least 40
Negative cutoff voltage (at anode voltage 10 kV, anode currentO.1 A, magnetic field intensity 950±50 Oe),
V (absolute value), at most
60
Interelectrode capacitance, pF, max.:
grid-cathode 170
grid-anode 90
anode-cathode 0.8
Output power (at 1 MHz, anode voltage 10 kV, filament voltage 6.0V, magnetic field intensity 950±50 Oe), kW 60

Limit Operating Values
Filament voltage (AC or DC), V 5.7-6.3
Anode voltage (DC), kV 11
Negative bias voltage, V (absolute value) 1.000
Filament starting current, A 430
Anode current (DC component), A 7.5
Grid current (DC component), A 0.3
Magnetic field intensity, E 900-1,000
Dissipation, W:
anode 2.5x104
grid 500
Operating frequency, MHz 30
Temperature at envelope (hottest point). °C 150

gk-12a(2)1.jpg
Averaged Grid Characteristic Curves:
Uf = 6V; magnetic field intensity (N) 79,577.5 Am

gk-12a(2)2.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 6V; magnetic field intensity (N) 79,577.5 Am

gk-12a(3)1.jpg
Averaged Grid Characteristic Curves:
Uf = 6V; magnetic field intensity (N) 1,0000 G

gk-12a(3)2.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 6V; magnetic field intensity (N) 1.000 G