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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

TBW12/25

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ClassIndustrial R.F. Power Triode

Construction

Primary TypeTriode
EnvelopeWater Cooled
SectionsSingle

Filament / Heater

MaterialThoriated tungsten

Absolute Maximum Ratings

Plate Voltage13000 V
Plate Dissipation20000 W
Grid 1 Voltage-1500 V
Cathode Current4800 mA

Audio Performance

Key Features
  • Water cooled
  • Direct heating
  • Industrial R.F. oscillator

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
R.F. Class C oscillator (Three-phase)12000 V20000—343200 mA
R.F. Class C oscillator (Three-phase)10000 V20000—343200 mA
R.F. Class C oscillator (Three-phase)8000 V20000—34

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    3200 mA