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

LPT44

Machlett high-power directly heated triode for transmitting and RF power service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 29 A

Description

Refer to Machlett price list. When ordering specify * accessories - 0il jacket assembly (optional) The ML-LPT 44 is a high voltage, high mu triode de- Filament Current: 29 amps signed primarily to operate as a switch tube in hard-tube puise modulators for radar and similar Filament Starting applications. In this service it can deliver pulse output in the order of 1-2 Mw, depending on cir- Fitament Cold

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
29 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
350
Max plate voltage
120000 V
Max plate dissipation
2500 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

  • Filament Voltage

    12.6 V

    Filament Voltage: 12.6 volts

  • The ML-LPT [1]

    44 A

    The ML-LPT 44 is a high voltage, high mu triode de- Filament Current: 29 amps

  • The ML-LPT [2]

    29 A

    The ML-LPT 44 is a high voltage, high mu triode de- Filament Current: 29 amps

  • Current, maximum

    120 A

    Current, maximum: 120 amps

  • output in the order of [1]

    1

    output in the order of 1-2 Mw, depending on cir- Fitament Cold

  • output in the order of [2]

    -2

    output in the order of 1-2 Mw, depending on cir- Fitament Cold

  • cuitry and performance requirements. Resistance

    0.0053 mA

    cuitry and performance requirements. Resistance: 0.0053 ohm

  • The ML-LPT [1]

    44

    The ML-LPT 44 is designed for operation in oil or Amplification Factor: 350

  • The ML-LPT [2]

    350

    The ML-LPT 44 is designed for operation in oil or Amplification Factor: 350

  • For applications with a resistive load and low Grid Plate

    7

    For applications with a resistive load and low Grid Plate: 7.0 pt

  • voltage. Where the tube is to be used in series with Plate Filament

    0.2 pF

    voltage. Where the tube is to be used in series with Plate Filament: 0.2 pf

  • ble of dissipating [1]

    2500

    ble of dissipating 2,500 W when cooled by forced Oil Flow for 2,500 W

  • ble of dissipating [2]

    2500

    ble of dissipating 2,500 W when cooled by forced Oil Flow for 2,500 W

  • Plate Dissipation [1]

    10

    Plate Dissipation: 10-12 gal/min (38-45 I/min.)

  • Plate Dissipation [2]

    -12

    Plate Dissipation: 10-12 gal/min (38-45 I/min.)

  • Plate Dissipation [3]

    38

    Plate Dissipation: 10-12 gal/min (38-45 I/min.)

  • Plate Dissipation [4]

    -45

    Plate Dissipation: 10-12 gal/min (38-45 I/min.)

  • Temperature [1]

    75 C

    Temperature: 75°C (167 °F)

  • Temperature [2]

    167 C

    Temperature: 75°C (167 °F)

  • When operating at peak voltage in excess of

    15

    When operating at peak voltage in excess of 15 kV,

  • within which the tube is used. Instructions for pro- Dissipation [1]

    75 C

    within which the tube is used. Instructions for pro- Dissipation: 75°C (167 °F)

  • within which the tube is used. Instructions for pro- Dissipation [2]

    167 C

    within which the tube is used. Instructions for pro- Dissipation: 75°C (167 °F)

  • Medical X-Ray and Sealed Gamma Ray Sources.” Temperature [1]

    165 mA

    Medical X-Ray and Sealed Gamma Ray Sources.” Temperature: 165°C (329 °F)

  • Medical X-Ray and Sealed Gamma Ray Sources.” Temperature [2]

    329 mA

    Medical X-Ray and Sealed Gamma Ray Sources.” Temperature: 165°C (329 °F)

  • DC Plate Voltage

    120

    DCPlateVoltage ....................... 120 kVi

  • Peak PlateVoltage

    125

    Peak PlateVoltage ...................... 125 kvt

  • DCGridVoltage .................couvenn

    -1000

    DCGridVoltage .................couvenn -1000 V

  • Peak Negative Grid Voltage

    -2500

    Peak Negative Grid Voltage. .. ............ -2500 v

  • Pulse Cathode Current

    22

    Pulse Cathode Current .................. 22 a

  • Grid Dissipation ..................c.oo

    50

    Grid Dissipation ..................c.oo... 50 W

  • Plate Dissipation

    2500

    Plate Dissipation ....................... 2500 W

  • PulseDuration .................ccvennn

    1000

    PulseDuration .................ccvennn. 1000 us

  • DutyFactor ...........c.iiiiiiinnnnn

    1

    DutyFactor ...........c.iiiiiiinnnnn. .01 #

  • DCPilateVoltage ..............ccovuvnn

    100

    DCPilateVoltage ..............ccovuvnn. 100 kv

  • DCGridVoltage ...............covvnn. ~

    400

    DCGridVoltage ...............covvnn. ~400 V

  • Pulse Positive Grid Voltage

    800

    Pulse Positive Grid Voltage .. ............. 800 v

  • Pulse PlateCurrent

    15

    Pulse PlateCurrent ..................... 15 a

  • Pulse GridCurrent

    26

    Pulse GridCurrent ...................... 26 a

  • Pulse DrivingPower

    3.1 kW

    Pulse DrivingPower ..................... 3.1 kw

  • Pulse PowerOQutput

    1.3

    Pulse PowerOQutput ..................... 1.3 Mw

  • Pulsed Plate Output Voltage

    88

    Pulsed Plate Output Voltage . ............. 88 kv

  • DutyFactor ............... .o vt

    5

    DutyFactor ............... .o vt .005

  • Published value

    1 mA

    1 This voltage may be applied only when the tube is immersed in a

  • I/min.) oil flow in ML oil jacket F

    27548

    I/min.) oil flow in ML oil jacket F-27548