Tube-number record
9GB8
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BrandSiemens Edison Swan
ClassTriode-Beam Tetrode
BaseNoval (B9A)
Filament9.4 V @ 0.3 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIntended for use in series connected heater chains.
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation3 W
Grid 2 Voltage250 V
H-C Voltage150 V
Audio Performance
Key Features
- High slope beam tetrode
- Medium mu triode
- Series heater connection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 200 V | 1400 | — | 18 | 10 mA |
| Tetrode Section | 170 V | 7500 | — | — | 10 mA |
Application Notes
Intended for Video Output or Sync Separator stages of AC/DC Mains Television receivers.
Datasheets
Datasheet: 9GB8.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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