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

CAT22

Very-high-power water-cooled pure-tungsten transmitting triode for RF amplifier and oscillator service. Approximately 150 kW plate dissipation and 20 kV capability support enormous HF transmitter output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
32.5 V / 460 A

Description

Very-high-power water-cooled transmitting triode with pure-tungsten filament for RF amplifier/oscillator service to about 30 MHz.

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
32.5 V
Nominal heater current
460 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
Transconductance
0.05 S
Amplification factor
45
Max plate voltage
20000 V
Max plate dissipation
150000 W
Max grid dissipation
8000 W
Max cathode current
30 A

Applicable promoted ratings mapped semantically from the printed approximate-data/ratings tables; useful non-promoted operating, capacitance and service data retained 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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Filament Starting Current Maximum

    500 A

  • Anode Water Flow Minimum

    40 gal/min

  • Cooling Water Outlet Temperature Maximum

    65 C

  • Grid-Cathode Capacitance

    100 pF

  • Anode-Cathode Capacitance

    4.5 pF

  • Grid-Anode Capacitance

    52 pF

  • Typical Plate Voltage

    10000 V

    ClassC

  • Typical Plate Voltage

    15000 V

    ClassC

  • Typical RF Output Power

    64000 W

    ClassC

  • Typical RF Output Power

    108000 W

    ClassC