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

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Tube-number record

RD27AS

0 archive entries

BrandTesla
ClassTransmitting triode
Base4-pin

Construction

Primary TypeTriode
Envelopeglass
Sections1

Filament / Heater

Materialoxide-coated

Absolute Maximum Ratings

Plate Voltage600 V
Plate Dissipation27 W
Cathode Current175 mA

Audio Performance

Key Features
  • Directly heated cathode
  • Class C power amplifier
  • Oscillator
  • AF power amplifier

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
characteristic data600 V750012659.545 mA

Datasheets

Datasheet: RD27AS.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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