Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Switching Tube ·Tetrode

GMI83V

Russian high-power tetrode designed for pulse-modulator or pulse-power switching service in RF equipment, controlling high-voltage, high-current pulses rather than continuous linear amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
25 V / 2.25 A

Description

The GMI83V is a pulse-modulator tetrode used as a high-voltage pulse power switch.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
25 V
Nominal heater current
2.25 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
18000 V
Max cathode current
25 A

Published pulse ratings promoted; pulse-grid and electrical-strength data retained.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1968 Electronintorg

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Heater current

    2 A to 2.5 A

  • Peak anode current minimum

    15 A

  • Cutoff voltage

    300 to 700 V

Capacitance

  • Input capacitance

    30 to 35 pF

  • Output capacitance

    5 to 11 pF

  • Transfer capacitance maximum

    1 pF

Other

  • Peak grid 1 excess voltage

    250 V

  • Peak cathode current

    25 A