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

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Tube-number record

3C34

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BrandHeintz & Kaufman, Ltd.
ClassTriode
Base4-pin

Construction

Primary TypeTriode
EnvelopeGlass
Base MaterialCeramic

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Plate Voltage2000 V
Plate Dissipation28 W
Grid 1 Voltage-250 V
Cathode Current75 mA

Audio Performance

Power Output120 W
Key Features
  • Triode Amplifier-Oscillator
  • Thoriated Tungsten Filament
  • Convection Cooling
  • Ceramic Base

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Average Characteristics1000 V2600—2535 mA
Class B Audio-Frequency (Two Tubes)1500 V—21200—136 mA
Class C Radio-Frequency (Plate Modulated)1500 V———

Datasheets

Datasheet: 3C34.pdf

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

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    50 mA
    Class C Radio-Frequency (Unmodulated)2000 V———56 mA