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Ukraine, Rovno
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Technical characteristics
  • BrandElektro-mag
  • Country of manufactureRussia

GMI-90 (2003)

Pulse modulator tetrode of GMI-90 for work in pulse modulators of stationary radiotehnical devices.

Registration - glass, with a socle.

The cathode - oxidic indirect heat.

Height - no more than 250 mm.

Diameter - no more than 145 mm.

Weight - 1,3 kg.

Key GMI-90 technical parameters:
Filament current

7,2 A

Anode current in an impulse

not less than 40 And

Anode current (at Un =22,5 B)

not less than 36 mA

Current of the 2nd grid

no more than 25 mA

Current of the 1st grid

no more than 7 mA

Negative voltage (at Ia =0,5 mA)

no more than 550 V

Resistance of an anode load

735 Ohm

The interelectrode tanks, pF:
- entrance

no more than 150

- output

no more than 35

- checkpoint

no more than 10


not less than 350 h

Limit service data:
Heat tension

23,75 - 26,25 B

Anode tension

33 kV

Tension of the 2nd grid

1,75 kV

Tension of the 1st grid in an impulse

300 V

Anode current in an impulse

36 A

The power disseminated by the anode

140 W

The power disseminated by the 2nd grid

45 W

The power disseminated by the 1st grid

5 W

Pulse width

3 microsec

Cylinder temperature

170 C

Interval of working temperatures of a circumambient

from-60 to +70 With

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