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

Power - Beam (NOT sweep) ·BeamPower-BeamPower

GMI61

Russian double beam-power tetrode designed specifically for pulse-modulator service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 1.2 A

Description

The GMI61 is a double beam-power tetrode intended for pulse-modulator service.

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
12.6 V
Nominal heater current
1.2 A
Parallel heater voltage
6.3 V
Parallel heater current
2.4 A
Series capable
Yes

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Max plate voltage
4000 V
Max screen voltage
800 V
Max cathode current
15 A

Representative row for both identical sections; some dissipation/current limits are explicitly shared across both tetrodes.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances
Max plate voltage
4000 V
Max screen voltage
800 V
Max cathode current
15 A

Second identical physical beam-power section; added to align double beam-power tetrode with SectionCount=2.

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

Beam Power

Characteristic

  • Peak anode current

    8 A to 10.5 A

    EachSection

Other

  • Peak grid 2 current maximum

    3.5 A

    EachSection

  • Peak grid 1 current maximum

    3 A

    EachSection

Capacitance

  • Input capacitance

    11 to 18 pF

  • Output capacitance

    4.2 to 6.2 pF

  • Transfer capacitance maximum

    0.2 pF