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New tube gmi-42B (GMI42B GMI42)
TUBE GMI-42B (GMI42B GMI42) NEW!
http://www.staffordu3a.org.uk/data/Components/Valves/gmi-42b.pdf
The SvetlanaTM GMI-42B is a metal-ceramic shielded-grid triode intended for use as a shunt regulator or pulse modulator in high-voltage systems. It features anode operating voltage of 33 kV and a plate dissipation of 500 watts using forced-air cooling. The GMI-42B has a shielding electrode connected internally to the cathode via short, low-impedance straps. This design permits operation with low grid current, and results in favorably low grid-anode capacitance. The presence of the ground-potential shield adjacent to the anode protects the cathode and the grid from damage due to transient arcs. Features: -extremely rugged -plate currents up to 33 amps (duty cycle 0.2%)
The GMI-42B triode is used for pulse power switching in pulse modulators in RF equipment
Cathode: indirectly heated, oxide-coated.
OPERATING ENVIRONMENTAL CONDITIONS
Multiple impacts with acceleration, m/s
Single impacts with acceleration, m/s
Relative humidity at +40 C, %
Negative grid voltage, absolute value, V
Interelectrode capacitance, pF:
Maximum pulse duration at peak cathode current at most 33 A, s
at anode current 8 A and anode voltage up to 20 kV
with speed-up heater voltage and anode voltage 25 kV
