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GM-3A

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ClassModulator Triode

Construction

Primary TypeTriode
Envelopeglass-to-metal

Filament / Heater

Materialcarbonized thoriated tungsten

Absolute Maximum Ratings

Plate Voltage6000 V
Plate Dissipation7500 W
Grid 1 Voltage600 V

Audio Performance

Key Features
  • Forced water/air cooling
  • Carbonized thoriated tungsten cathode
  • Low-frequency no-distortion amplification

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Zero grid voltage condition1500V22000-93000mA

Application Notes

The GM-3A triode is used in low-frequency no-distortion cathode-coupled amplifier circuits in electronic equipment.

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