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TBL7/9000

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BrandPhilips
ClassTriode

Construction

Primary Typetriode
Envelopeglass/metal
Sectionssingle

Filament / Heater

Materialthoriated tungsten

Absolute Maximum Ratings

Plate Voltage8000 V
Plate Dissipation6000 W
Grid 1 Voltage-1250 V
Cathode Current1800 mA

Audio Performance

Key Features
  • Thoriated tungsten filament
  • Forced air cooling
  • Industrial R.F. generators

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF class C oscillator7200V120002000241500mA
RF class C oscillator (alternate)6200V120002000241440mA

Application Notes

At frequencies above 4 Mc/s both grid terminals should be connected in parallel to distribute R.F. current equally and avoid excessive seal temperatures.

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