TubeDatabase
  • Tubes
  • Testers
  • Companies
  • Submit
  • About

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)
DisclaimerSubmit a tube

Tube-number record

GU 8

0 archive entries

BrandMarconi
ClassPower Rectifier
BaseSpecial / none

Construction

Primary TypeRectifier
Rectifier TypeMercury vapour
EnvelopeGlass
SectionsSingle

Filament / Heater

Warm-up Time60s

Absolute Maximum Ratings

Plate Voltage22000 V
Cathode Current4000 mA

Audio Performance

Key Features
  • Directly heated
  • Mercury vapour
  • Half-wave rectifier

Application Notes

The valve must be mounted vertically with its anode cap uppermost. A time delay of at least one minute is required after switching on the filament before anode voltage is applied. For new or stored valves, seasoning of 30 minutes at normal filament voltage is required.

Datasheets

Datasheet: GU8.pdf

Download PDF
Loading datasheet...

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

Filters

0 tubes found

Manufacturers

Brands

    0 results