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Power - Triode (over 1000V 100W) ·Triode

GS31B

Grounded-grid metal-ceramic RF power triode for continuous-wave generation and amplification. Approximately 1 kW plate dissipation and multi-kilovolt capability provide substantial radio-frequency power in a compact transmitting format.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 3.4 A

Description

The GS31B is a grounded-grid rf triode for cw generation and amplification.

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
3.4 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

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.025 S
Max plate voltage
2500 V
Max plate dissipation
1000 W
Max grid dissipation
22 W
Max cathode current
1.4 A

Promoted from English maximum values and characteristics.

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

Triode

Characteristic

  • Heater current

    3.1 A to 3.7 A

  • Mutual conductance

    25 mA/V

  • Operating point grid voltage

    -12 to -6 V

    AnodeVoltage=2kV;AnodeCurrent=250mA

Other

  • Maximum anode voltage

    2500 V

  • Maximum cathode/anode current

    1.4 A

  • Anode dissipation

    1000 W

  • Grid dissipation

    22 W

  • Warm-up time maximum

    120 s

  • Minimum output power

    360 W

    AnodeVoltage=1.8kV

  • Grid voltage instantaneous range

    -400 to 120 V

Capacitance

  • Input capacitance

    19 to 24 pF

  • Output capacitance maximum

    0.12 pF

  • Transfer capacitance

    3.8 to 5.2 pF