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

7838

Air-cooled high-power triode for RF amplification, oscillation, Class B modulation, and hard-tube pulse applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 285 A

Description

The F-7838 belongs to the F-7837/F-7838/F-7839 family for RF amplification, oscillation, Class-B modulation, and hard-tube pulse applications.

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
285 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
Max plate voltage
65000 V
Max plate dissipation
25000 W

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

Characteristic

  • Filament Voltage

    12.6 V

  • Filament Current

    285 A

  • Filament Starting Current

    1000 A

Capacitance

  • Grid-Plate Capacitance

    37 pF

  • Plate-Filament Capacitance

    2.4 pF

Other

  • Maximum DC Plate Voltage

    19500 V

  • Maximum Series-Regulator Plate Voltage

    65000 V

  • Maximum Plate Dissipation

    25000 W

  • Maximum Signal Plate Input

    175 kW

  • Maximum Signal Power Output

    225 kW

  • Pulse Cathode Current

    160-230 A