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

7845

Shielded-grid pulse-switch triode designed for very-high-voltage pulse modulator and amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6 V / 60 A

Description

Shielded-grid pulse-switch triode for very-high-voltage pulse modulator/amplifier 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
6 V
Nominal heater current
60 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
500
Max plate voltage
80000 V
Max plate dissipation
3000 W
Max grid dissipation
75 W
Max cathode current
90 A

Applicable promoted ratings populated from printed headings; remaining published device-specific data retained as parameters.

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

1971 Machlette Laboratories

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Grid-Plate Capacitance

    1.9 pF

  • Grid-Cathode Capacitance

    250 pF

  • Plate-Cathode Capacitance

    18 pF

Other

  • Peak Plate Voltage

    80000 V

    Pulse

  • DC Grid Voltage

    -600 V

  • DC Plate Current

    250 mA

  • Typical Pulse Power Output

    4.5 MW

    Pulse