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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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ML-7715 vacuum tube outline illustration

Tube-number record

ML-7715

0 archive entries

ML-7715 is a tube type in the TubeDatabase archive (class: Switch Tube / Pulse Modulator). Recorded specifications: brand Machlett, year 1981, construction Triode, base Metal/Glass, maximum plate voltage 65000 V, and maximum plate dissipation 3000 W. The archive does not yet hold a photographed example of this type.

BrandMachlett
ClassSwitch Tube / Pulse Modulator
Filament6 V @ 60000 mA

Construction

Primary TypeTriode
EnvelopeGlass
Base MaterialMetal/Glass
Sections1

Filament / Heater

Heater NotesCathode warmup time 10 minutes

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pulse Modulator/Amplifier (Typical 1)60000 V——40025000 mA
Pulse Modulator/Amplifier (Typical 2)65000 V——40065000 mA

Application Notes

Designed for switch tubes in hard-tube pulse modulators for radar applications. Peak pulse power output up to 3.5 MW.

Filters

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Manufacturers

Brands

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    Plate Voltage65000 V
    Plate Dissipation3000 W
    Grid 1 Voltage-600 V
    Cathode Current90000 mA

    Audio Performance

    Key Features
    • Beamed electrode structure
    • Shielded-grid
    • Unipotential oxide-coated cathode
    • Forced-air or forced-oil cooling