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Power - Triode ·Triode

TX1220W

Water-cooled high-power transmitting triode for RF power amplification and industrial RF heating.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
18.5 V / 85 A

Description

Water-cooled high-power transmitting triode for RF power amplification and RF heating.

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
18.5 V
Nominal heater current
85 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
3
Max plate voltage
12000 V
Max cathode current
2.63 A

Promoted from published Mullard absolute-maximum/limiting-value and characteristic tables; service-specific limits retained in parameter rows.

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 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    18.5 V

  • HeaterOrFilamentCurrent

    85 A

  • Grid To Plate Capacitance

    26 pF

  • Output Capacitance

    1.5 pF

  • Amplification Factor

    3

Other

  • Plate Voltage

    12 kV

    ClassC

  • Grid Voltage

    -900 V

    ClassC

  • Plate Current

    2.63 A

    ClassC

  • Grid Current

    370 mA

    ClassC

  • DriveVoltagePeak

    1.85 kV

    ClassC

  • DrivePower

    700 W

    ClassC

  • PlateInputPower

    22 kW

    ClassC

  • Power Output

    9.5 kW

    ClassC

  • Efficiency

    70 %

    ClassC