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Tube Database (7,341 tube types · 1,270 archive entries)

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ML-7668 vacuum tube outline illustration

Tube-number record

ML-7668

0 archive entries

ML-7668 is a tube type in the TubeDatabase archive (class: High-Voltage, High-Mu Triode). Recorded specifications: brand Machlett, year 1964, construction Triode, base Not specified, socket Special / none, maximum plate voltage 150000 V, and maximum plate dissipation 750 W. The archive does not yet hold a photographed example of this type.

BrandMachlett
ClassHigh-Voltage, High-Mu Triode
BaseSpecial / none

Construction

Primary TypeTriode
EnvelopeGlass/Metal
Base MaterialNot specified
Sections1

Filament / Heater

Materialthoriated-tungsten

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pulse Modulator125000 V——18011000 mA

Application Notes

Designed primarily as a switch tube in hard-tube pulse modulators for radar. Operation requires immersion in insulating oil or equivalent dielectric fluid.

Filters

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Manufacturers

Brands

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    Plate Voltage150000 V
    Plate Dissipation750 W
    Grid 1 Voltage-1500 V
    Cathode Current15000 mA

    Audio Performance

    Key Features
    • Hard-tube pulse modulator switch tube
    • High-mu
    • Oil immersed operation
    • Thoriated-tungsten filament