8148

Power transmitting triode for RF amplification, oscillation, modulation, or related high-power electronic service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 7 V / 26 A

Description

Water-cooled thoriated-tungsten power triode intended especially for Class-AB 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: 7 V
Nominal heater current: 26 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

Amplification factor: 5.5
Max plate voltage: 20000 V
Max plate dissipation: 40000 W
Max grid dissipation: 800 W
Max cathode current: 100 A

Applicable promoted fields mapped semantically from the printed ratings; device-specific electrical limits and operating conditions are preserved densely 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

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Filament Starting Current
1000 A
Grid-Plate Capacitance
88 pF
Grid-Filament Capacitance
70 pF
Plate-Filament Capacitance
12 pF
AF Plate Voltage Maximum
8000 V
Grid Dissipation Maximum
800 W
Pulse DC Plate Voltage Maximum
20000 V
Pulse Cathode Current Maximum
100 A
Typical Pulse Plate Voltage
17000 V