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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

3Q/292E

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ClassDouble Ended Water Cooled Triode

Construction

Primary TypeTriode
EnvelopeWater Cooled
Sections1

Filament / Heater

MaterialTungsten

Absolute Maximum Ratings

Plate Voltage17500 V
Plate Dissipation80000 W

Audio Performance

Power Output100000 W
Key Features
  • Water Cooled
  • Double Ended
  • High Power Output
  • Integral Water Jacket

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class B AF Power Amplifier (Balanced 2 valve)14000 V200001800366500 mA
Class B RF Telephony Modulated Carrier17500 V200001800364800 mA
Class C Power Amplifier (Anode Subject to Modulation)12000 V20000180036

Application Notes

Water jacket is an integral part of the valve. Maximum water pressure in jacket is 35 lb. per sq. in.

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    5000 mA
    Class C Power Amplifier or Oscillator (Unmodulated)17500 V200001800369600 mA