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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

4B27

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BrandGeneral Electric Co.
ClassFull-Wave Gas-Filled Rectifier
Base4-pin

Construction

Primary TypeOther / special
Rectifier TypeFull-Wave
EnvelopeGlass
Base MaterialPlastic/Metal
Sections2

Filament / Heater

MaterialMercury-Vapor
Warm-up Time300s

Absolute Maximum Ratings

Plate Voltage1000 V
Cathode Current2000 mA

Audio Performance

Key Features
  • Full-Wave
  • Gas-Filled
  • High Power Rectifier
  • Convection Cooled

Application Notes

Requires a 5-minute time delay for filament warmup before applying anode voltage.

Datasheets

Datasheet: 4B27.pdf

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

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