TH485

Vapotron vapor-cooled high-power transmitting triode for AF and RF amplification. Approximately 65 kW plate dissipation and 15 kV capability support substantial power-amplifier operation in large transmitting and industrial equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 12.6 V / -

Description

Vapotron vapor-cooled high-power transmitting triode for AF/RF amplification.

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: -
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: 15000 V
Max plate dissipation: 65000 W
Max grid dissipation: 1500 W
Max cathode current: 75 A

Promoted maximum ratings/characteristics mapped semantically from the printed ratings tables; additional published electrical data are preserved 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

1972 Thomson CSF

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

DC Anode Current Maximum
16 A
DC Grid Current Maximum
2 A
Input Power Maximum
180 kW
Frequency Full Load Maximum
10 MHz
Typical Anode Voltage
12000 V
Typical Anode Current
10.7 A
Typical Grid Current
1.1 A
Typical Output Power
100 kW