Tube-number record
GU 8
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GU 8 is a tube type in the TubeDatabase archive (class: Power Rectifier). Recorded specifications: brand Marconi, construction Rectifier, socket Special / none, and maximum plate voltage 22000 V. The archive does not yet hold a photographed example of this type.
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 PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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