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Power - Triode ·Triode

ETV561

Very-high-power coaxial ceramic transmitting triode for large transmitters, capable of hundreds of kilowatts RF output with vaporization or forced-fluid cooling.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12 V / 480 A

Description

Very-high-power coaxial ceramic transmitting triode intended for large transmitters, cooled by vaporization or forced fluids and capable of hundreds of kilowatts RF output.

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 V
Nominal heater current
480 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
0.135 S
Amplification factor
50
Max plate voltage
18000 V

Published promoted ratings/characteristics retained where readable; additional values are in TUBE_SECTION_PARAMETER.

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

1958 Compagnie General

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Filament-to-grid capacitance

    180 pF

  • Grid-to-plate capacitance

    100 pF

  • Filament-to-plate capacitance

    3.5 pF

Other

  • RF output power

    300 kW

    f<10MHz;Va=16kV

  • RF output power

    200 kW

    HigherFrequency;Va≈12kV