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

DP20

High-mu hard-tube pulse-modulator switch triode for radar and similar applications, capable of approximately 2 MW pulse output.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

The ML-DP20 is 2 high-mu triode designed primarily to stress-free thoriated-tungsten filaments. The tube is designed operate as a switch tube in hard-tube pulse modulators, for for operation in oil or equivalent dielectric liquid, which is radar and similar applications. In this service the tube can required for utilization of the maximum plate voltage rating deliver pulse power output in the order of 2 Mw. of 90 kV. The anode is capable of dissipating 1.6 kW when The cathode of this tube consists of sturdy, self-supporting, cooled by free convection of oil. Note: Data contained herein are based on initial design and test criteria. Before using these data in final equipment designs, coniult Machlett for possible revisions.

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
-
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
92000 V
Max plate dissipation
1600 W

Promoted ratings/characteristics mapped from printed headings; device/service-specific values retained in parameters.

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

Other

  • deliver pulse power output in the order of [1]

    2 kW

    deliver pulse power output in the order of 2 Mw. of 90 kV. The anode is capable of dissipating 1.6 kW when

  • deliver pulse power output in the order of [2]

    90 kW

    deliver pulse power output in the order of 2 Mw. of 90 kV. The anode is capable of dissipating 1.6 kW when

  • deliver pulse power output in the order of [3]

    1.6 kW

    deliver pulse power output in the order of 2 Mw. of 90 kV. The anode is capable of dissipating 1.6 kW when

  • Maximum bulk oil temperature

    75 mA

    Maximum bulk oil temperature ... ...................................................................... 75 °Ct

  • Maximum Glass Temperature .............coooooirvirnrcnnnen

    165 mA

    Maximum Glass Temperature .............coooooirvirnrcnnnen. ...................................................................... 165 °C

  • DC Plate Voltage ... ..o oo

    920

    DC Plate Voltage ... ..o oo 920 kV§ @ = = I

  • Peak Plate Voltage [1]

    100

    Peak Plate Voltage . ... ... . 100 kv§ GRID —3)' ‘

  • Peak Plate Voltage [2]

    -3

    Peak Plate Voltage . ... ... . 100 kv§ GRID —3)' ‘

  • DC Grid Voltage

    -1500

    DC Grid Voltage .............. ... —1500 V TERMINAL —~_ ) @)

  • Peak Negative Grid Voltage [1]

    -2500

    Peak Negative Grid Voltage ... ... . —2500 v ®/ ‘ 1

  • Peak Negative Grid Voltage [2]

    1

    Peak Negative Grid Voltage ... ... . —2500 v ®/ ‘ 1

  • Pulse Cathode Current

    35

    Pulse Cathode Current ... ... . 35 a ! @ @)

  • Grid Dissipation

    300

    Grid Dissipation ... .. 300 W

  • Plate Dissipation

    1.6 kW

    Plate Dissipation ................................ 1.6 kw:

  • Pulse Duration, approximate

    1000 mA

    Pulse Duration, approximate ................ . 1000 pus# @ @) @)

  • Duty Factor

    3

    Duty Factor ... 03 #

  • DC Plate Voltage .................cc.ooiiiiii

    80

    DC Plate Voltage .................cc.ooiiiiii 80 kV

  • DC Grid Voltage —

    -600

    DC Grid Voltage —-600 V Y

  • Peak Positive Grid Voltage

    1600

    Peak Positive Grid Voltage 1600 v

  • Pulse Plate Current

    30

    Pulse Plate Current ... 30 a G T '

  • Pulse Grid Current

    10

    Pulse Grid Current ... 10 a O

  • Pulse Driving Power

    21 kW

    Pulse Driving Power .. 21 kw H

  • Puise Power Outpurt

    2.2

    Puise Power Outpurt 2.2 Mw O CP)

  • Pulsed Plate Output Voltage

    76

    Pulsed Plate Output Voltage .......... 76 kv :

  • Duty Factor

    1

    Duty Factor ... .01 ANODE

  • Higher plate dissipation is possible with forced-liquid cooling. DIMENSIONS FOR OUTLINE OF ML-DP2

    0

    Higher plate dissipation is possible with forced-liquid cooling. DIMENSIONS FOR OUTLINE OF ML-DP20

  • e

    50

    e 50y - CONSTANT GRID-VOLTAGE CHARACTERISTICS

  • GRID CURRENT — = = - |

    19

    ... GRID CURRENT — = = - | .19

  • i A~

    28152 kV

    i A~28152 DC PLATE VOLTAGE—KILOVOLTS