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.

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

Averaged Grid Characteristic Curves:
U_f = 6V; magnetic field intensity (N) 79,577.5 Am

Averaged Anode-Grid Characteristic Curves:
U_f = 6V; magnetic field intensity (N) 79,577.5 Am

Averaged Grid Characteristic Curves:
U_f = 6V; magnetic field intensity (N) 1,0000 G

Averaged Anode-Grid Characteristic Curves:
U_f = 6V; magnetic field intensity (N) 1.000 G

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