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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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Tube-number record

WL-7215

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WL-7215 is a tube type in the TubeDatabase archive (class: Power Amplifier Triode). Recorded specifications: brand Westinghouse, construction Triode, maximum plate voltage 9200 V, and maximum plate dissipation 9000 W. The archive does not yet hold a photographed example of this type.

BrandWestinghouse
ClassPower Amplifier Triode

Construction

Primary TypeTriode
EnvelopeGlass/Metal with integral water jacket
SectionsSingle

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Plate Voltage9200 V
Plate Dissipation9000 W
Grid 1 Voltage1500 V
Cathode Current2000 mA

Audio Performance

Key Features
  • High perveance structure
  • Integral water jacket with internal spiral water diverter
  • Turbulence cooling prevents anode hot spots
  • Spring loaded thoriated tungsten filament
  • High efficiency filament design (50A peak at 350W)

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF Power Amplifier Class C Telegraphy (5kV)5000 V——221610 mA
RF Power Amplifier Class C Telegraphy (9kV)9000 V——222000 mA

Application Notes

Specifically designed for operation with lower voltage power supplies and industrial heating applications (induction and dielectric). Ratings apply up to 30 megacycles.

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