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

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Tube-number record

4X025

0 archive entries

BrandVEB Werk für Fernsehelektronik Berlin
ClassHalf-wave Rectifier
BaseSpecial / none

Construction

Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass
SectionsSingle

Filament / Heater

MaterialOxide
Warm-up Time30s

Absolute Maximum Ratings

Plate Voltage10000 V
Cathode Current500 mA

Audio Performance

Key Features
  • Edelgasgefüllte Glühkatodenröhre
  • Direkt geheizte Oxidkatode
  • Mobile Gleichrichteranlagen

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Voltage Drop12 V———500 mA

Application Notes

Used specifically as a high-voltage half-wave rectifier tube in mobile systems.

Datasheets

Datasheet: 4X025.pdf

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

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