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3C34

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BrandHeintz & Kaufman, Ltd.
ClassTriode
BaseSmall 4-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 Characteristics1000V2600-2535mA
Class B Audio-Frequency (Two Tubes)1500V-21200-136mA
Class C Radio-Frequency (Plate Modulated)1500V---50mA
Class C Radio-Frequency (Unmodulated)2000V---56mA

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