7085

High-power water-cooled triode for industrial induction/dielectric heating, broadcast RF service, and AF modulation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 7.5 V / 170 A

Description

The GL-7085 is a high-power triode for induction and dielectric heating and broadcast use, with a thoriated-tungsten filament and water-cooled anode; it is rated for operation into the HF/VHF range.

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: 7.5 V
Nominal heater current: 170 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: 20
Max plate voltage: 12500 V
Max plate dissipation: 22500 W

Absolute plate-voltage limit and published anode dissipation promoted; remaining high-power operating ratings retained as parameters because the text layer is sparse in the wide table.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum Signal Plate Input
45 kW
ClassB
Filament Starting Current Maximum
800 A
Water Flow Minimum for Rated Dissipation
12 gal/min
Maximum Frequency at Full Ratings
25 MHz