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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

25Z6-GT

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BrandGeneral Electric
ClassHigh-Vacuum Rectifier Doubler
BaseOctal
Filament25 V @ 300 mA

Construction

Primary TypeRectifier
Rectifier Typehigh-vacuum
EnvelopeT-9 Glass
Base MaterialPhenolic
Sectionstwin

Filament / Heater

Heater NotesA-C or D-C

Absolute Maximum Ratings

Plate Voltage235 V
Cathode Current75 mA
H-C Voltage350 V

Audio Performance

Key Features
  • Heater-cathode type
  • Full-wave high-vacuum rectifier-doubler
  • Coated Unipotential Cathode

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Half-Wave Rectifier117 V—15—75 mA
Half-Wave Voltage Doubler117 V—40—75 mA
Full-Wave Voltage Doubler117 V—100—75 mA

Application Notes

Designed for use in the power supply of a-c or a-c/d-c receivers.

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