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

8549

Super-power water-cooled triode for continuous-wave RF and high-duty pulse service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
76 V / 1900 A

Description

The Machlett ML-8549 is a super-power water-cooled triode for cw, rf and high-duty pulse 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
76 V
Nominal heater current
1900 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
65000 V
Max plate dissipation
500000 W
Max grid dissipation
9000 W
Max cathode current
1200 A

Maximum ratings promoted from the printed pulse/CW service tables. X-ray flag follows the explicit source warning.

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

Characteristic

  • Amplification factor

    20

Other

  • Maximum DC/peak plate voltage

    65000 V

  • Maximum plate dissipation

    500000 W

  • Maximum grid dissipation

    9000 W

  • Maximum pulse cathode current

    1200 A