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

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Tube-number record

HIGH VOLTAGE TETRODE

0 archive entries

BrandMachlett
ClassSwitch Tube

Construction

Primary TypeTetrode
EnvelopeGlass
Sections1

Filament / Heater

MaterialThoriated-tungsten

Absolute Maximum Ratings

Plate Voltage125000 V
Plate Dissipation200 W
Grid 2 Voltage1500 V
Grid 1 Voltage-600 V
Cathode Current2000 mA

Audio Performance

Key Features
  • Designed for oil-immersed operation
  • Hard pulse modulator switch
  • Thoriated-tungsten filament

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Pulse High-Voltage Switching (in oil)125000 V———1020 mA

Application Notes

Operation of this tube may produce x-rays. Adequate rayproof shielding must be provided.

Filters

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