GI19B
TRIODE
The GI19B triode is used in groundedgrid selfexcited oscillator circuits with pulsed anode modulation.
GENERAL
Cathode: indirectly heated, oxidecoated.
Envelope: glasstometal.
Cooling: forced air.
Height: at most 220 mm.
Diameter: at most 100 mm.
Mass: at most 2.5 kg.
OPERATING ENVIRONMENTAL CONDITIONS  
Vibration loads:  
frequencies, Hz  1080 
acceleration, m/s²  29 
Multiple impacts with acceleration, m/s²  118 
Relative humidity at up to +40 °C, %  98 
BASIC DATA Electrical Parameters 

Heater voltage, V  7.3 
Heater current, A  1723 
Mutual conductance (at anode voltage 1 kV, anode current 0.5 A), mA/V  2133 
Interelectrode capacitance, pF:  
input  4656 
output  912 
transfer  1114 
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  7.17.5 
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 