Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Triode ·Triode

7805

Water-cooled version of the 7804 external-anode power triode, designed for high-power industrial RF oscillator service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 130 A

Description

7805 is a Triode device in the supplied Amperex literature. Water-cooled version of 7804.

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
6.3 V
Nominal heater current
130 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
17.5
Max plate voltage
6000 V
Max plate dissipation
15000 W

Water-cooled version of 7804.

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

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    6000 V

    RF/Industrial

  • Plate current

    3.3 A

    RF/Industrial

  • Output power

    14300 W

    RF/Industrial

  • Grid current

    800 mA

    RF/Industrial

  • Maximum frequency at full input rating

    30 MHz

Capacitance

  • Grid-to-plate capacitance

    40 pF

  • Grid-to-filament capacitance

    40 pF

  • Plate-to-filament capacitance

    1 pF