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Power - Triode ·Triode

859

Water-cooled high-power triode designed for substantial radio-frequency power service at frequencies extending to approximately 50 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
22 V / 71 A

Description

The Amperex 859 is a water-cooled high-power triode designed for high-power radio-frequency service up to 50 MHz.

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
22 V
Nominal heater current
71 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
0.008 S
Amplification factor
36
Max plate voltage
20000 V
Max plate dissipation
20000 W

Water-cooled high-power RF triode; two 11 V filament units in series.

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

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater/Filament Voltage

    22 V

    Published datasheet value

  • Heater/Filament Current

    71 A

    Published datasheet value

  • Maximum Plate/Anode Voltage

    20000 V

    Published datasheet value

  • Maximum Plate/Anode Dissipation

    20000 W

    Published datasheet value

Characteristic

  • Transconductance

    8000 µS

    Published datasheet value

  • Amplification Factor

    36

    Published datasheet value