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The GI-19B triode is used in grounded-grid self-excited oscillator circuits with pulsed anode modulation.

Cathode: indirectly heated, oxide-coated.
Envelope: glass-to-metal.
Cooling: forced air.
Height: at most 220 mm.
Diameter: at most 100 mm.
Mass: at most 2.5 kg.


Vibration loads:
frequencies, Hz 10-80
acceleration, m/s² 29
Multiple impacts with acceleration, m/s² 118
Relative humidity at up to +40 °C, % 98

Electrical Parameters
Heater voltage, V 7.3
Heater current, A 17-23
Mutual conductance (at anode voltage 1 kV, anode current 0.5 A), mA/V 21-33
Interelectrode capacitance, pF:
input 46-56
output 9-12
transfer 11-14
Cathode heating time, s, at most 120
Output power, kW:
at anode voltage 13.5 kV, at least 230
over 400 h of service, at least 205

Limit Operating Values
Heater voltage, V 7.1-7.5
Heater starting current, A 34.5
1/duty factor, at least 500
Peak anode voltage, kV 14
Dissipation, W:
anode 1x10³
grid 30
Pulse duration, µs 10
Temperature at anode, envelope and seals, °C 150