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The GI-12B triode is used as a RF oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation.
Cathode: indirectly heated, oxide-coated.
Envelope: metal-ceramic with ring leads.
Cooling: forced air.
Height: 88.5 mm.
Diameter: 45 mm.
Mass: at most 120 g.
|OPERATING ENVIRONMENTAL CONDITIONS|
|Multiple impacts with acceleration, m/s²||343|
|Ambient temperature, °C||-60 to +100|
|Relative humidity at up to +40 °C, %||98|
|Heater voltage, V||12.6|
|Heater current, A||0.75-0.88|
|Mutual conductance (at anode voltage 400 V, grid voltage change ±0.5 V, anode current 15 mA), mA/V||8-12|
|Penetration factor (at anode voltage 400 V, anode voltage change 400 V, anode current 15mA), %||0.7-1.5|
|Operating point (negative grid voltage at anode voltage 400 V, anode current 15 mA), V||4.5-1|
Interelectrode capacitance, pF:
|Output power in CW operation (at anode voltage 800 V, peak anode current 100 A, wavelength at most 9.3 cm), W, at least||3|
|Output power over 500 h of service, W||2.4|
|Limit Operating Values|
|Heater voltage, V||12-13.2|
|Anode voltage, kV:|
|with cold cathode||1|
|peak value (with pulse duration about 5 µs)||2|
|Peak grid voltage (with pulse duration 5µ), V||-150 to +50|
|Cathode current, A:|
|peak value (with pulse duration about 5 µs)||1.5|
|with forced cooling||80|
|with no forced cooling||20|
|Wavelength, cm, at least||9|
|anode heat sink||200|
|Resistance in grid circuit, kH||10|
Averaged Pulse-Operation Characteristic Curves:
Uf = 12.6V; Timp = 4µs; frequency 350 imp/s;
_ _ _ grid-anode
Averaged Characteristic Curves Showing Oscillator Output Power versus Anode Voltage in Pulse Operation:
Uf = 12.6V; L = 9cm; duty factor 0.005;
grid and cathode snorted out
Averaged Characteristic Curves of Oscillator Output Power versus Anode current in Pulse Operation:
Uf = 12.6 V; L = 9cm; duty factor 5 0.005
Averaged Anode-Grid Characteristic Curves