GI22
TRIODE
The GI22 triode is used as an oscillator with pulsed anode and grid keying in the centimetric and decimetric wavelength ranges.
GENERAL
Cathode: indirectly heated, oxidecoated.
Envelope: metalceramic.
Height: at most 31.3 mm.
Diameter: at most 23.4 mm.
Mass: at most 11 g.
KP  cathode and heater; P  heater; C  grid; A  anode
OPERATING ENVIRONMENTAL CONDITIONS  
Vibration loads:  
frequencies, Hz  52,000 
acceleration, m/s²  98 
Multiple impacts with acceleration, m/s²  343 
Single impacts with acceleration, m/s²  2,940 
Linear loads with acceleration, m/s²  490 
Ambient temperature, °C  60Þ+100 
Relative humidity at up to +40 °C, %  90 
BASIC DATA Electrical Parameters 

Heater voltage, V  6.3 
Heater current, mA  0.530.61 
Mutual conductance (at anode voltage 200 V, anode current 30 mA), mA/V  1518 
Operating point (negative grid voltage at anode voltage 200 V, anode current 30 mA), V  3.50.5 
Negative cutoff voltage (at anode voltage 200V, anode current 0.1 mA), V, at least  11 
Interelectrode capacitance, pF:  
input  2.64.3 
transfer  1.42.0 
output, at most  0.04 
Warm up time, s, at most  30 
Output power in pulsed operation (at anode voltage 1.6 kV, peak anode current 1.4 A, 1/duty factor 1,000), W, at most  375 
Limit Operating Values  
Heater voltage, V  6.06.6 
Anode voltage in grid keying mode, kV  1 
Peak anode voltage (with pulse duration at most 1 µs), kV  2 
Peak grid voltage (with pulse duration at most 1 µs), V  100 to +50 
Bias voltage change (in pulse grid keying mode), V  50 to 0 
Peak cathode current (with pulse duration at most 1 µs), A  2 
Dissipation, W:  
anode  10 
grid  0.1 
Wavelength, cm, at least  5 
1/duty factor, at least  800 
Cathode heating time, s  30 
Envelope temperature, °C  200 
Averaged AnodeGrid Characteristic Curves:
U_{f} = 6.3V;
— — — P_{a max}
Averaged Characteristic Curves in Pulsed Operation:
U_{f} = 6.3V;
_____ anodegrid;
_ _ _ grid
Averaged Characteristic Curves in Pulsed Operation:
U_{f} = 6.3V; U = 0; L = 9cm
Averaged Characteristic Curves in Pulsed Operation:
U_{f} = 6.3V; L = 9cm;
_____ oscillator output power P;
_ _ _ efficiency n depending on the amplitude of keying pulse in grid keying mode